A detailed look at Mammoth’s oversized 5-knot rope toy, including its design, tugging performance, dental-play concept, durability, sizing, and which dogs may get the most from it.
Quick Verdict
The Mammoth Flossy Chew 5-Knot Rope Tug is a large, simple rope toy built for dogs that enjoy pulling, tossing, shaking, chewing, and interactive play. Unlike compact three-knot ropes, the five-knot design gives the toy a much longer, more substantial profile.
The 36-inch version is officially listed by Mammoth as the X-Large 5-Knot Rope Tug, model 20040F, while the 72-inch version is the Super X-Large 20042F. Mammoth’s catalog describes the Flossy Chews line as cotton-poly rope toys intended for interactive play, tossing, and tugging.
The biggest attraction is therefore not complicated technology. It is the physical design. Multiple knots create several gripping points, while the long rope gives dogs and owners more room to interact. The rope fibers are also intended to provide a flossing action during chewing and play.
That said, this is still a rope toy. It should not be treated as indestructible, particularly for dogs that immediately focus on shredding and swallowing rope fibers. Real-world reports on the 36-inch model show that durability can vary substantially by dog and play style.
Mammoth FlossyTossy 5-Knot at a Glance
| Product | Mammoth Flossy Chew 5-Knot Rope Tug |
| Amazon ASIN | B001GIEZP6 |
| 5-Knot family | Mammoth Flossy Chews |
| 36-inch model | X-Large, model 20040F |
| 72-inch model | Super X-Large, model 20042F |
| Construction | Cotton-poly rope |
| Main uses | Tug, toss, fetch-style play, chewing |
| Best suited to | Medium-to-large dogs and interactive play |
The Amazon listing may use different size/color wording from Mammoth’s current catalog. The official Mammoth catalog identifies the 36-inch five-knot version as X-Large 20040F.
What Is the Mammoth FlossyTossy 5-Knot Rope?
A large rope built around five knots
The Mammoth FlossyTossy 5-Knot is a deliberately simple dog toy. There are no batteries, food compartments, plastic mechanisms, or complicated puzzle components. Instead, the toy uses a long cotton-poly rope with five large knots positioned along its length.
That design gives dogs multiple places to grab. A dog can bite one knot, pull from the end, carry the rope, shake it, or interact with another dog at a different point along the rope.
The 36-inch version is listed in Mammoth’s catalog as the Flossy Chew 5 Knot Rope Tug – X-Large, model 20040F. The same catalog separately lists the 72-inch Super X-Large model 20042F.
Part of Mammoth’s Flossy Chews line
Mammoth positions Flossy Chews as premium rope toys made from cotton-poly yarns. The company’s catalog describes them as suitable for interactive playing, tossing, and tugging while also highlighting the flossing action of the rope fibers during chewing and play.
That gives the five-knot toy a somewhat different purpose from a standard rope used only for tug-of-war. The toy is intended to combine physical play with chewing and dental-oriented interaction.
Still, the dental aspect should be understood realistically. A rope toy can contribute to mechanical interaction with the teeth during play, but it is not a replacement for brushing, veterinary dental care, or an appropriate professional treatment plan.
Five-Knot Design and Why It Matters
More gripping points than a basic rope
The five knots are more than decoration. They change how the dog can interact with the rope.
A plain rope gives the dog essentially one continuous gripping surface. A five-knot rope breaks that surface into larger, easier-to-grab sections. Dogs can bite down around a knot, carry the toy by one section, or pull against another section.
For owners, the same design creates different places to hold. Instead of having to grab a smooth length of rope, you can use a knot as a more secure grip during interactive play.
The longer layout changes the game
The 36-inch format is substantially different from the 15-inch three-knot toy discussed in the previous Mammoth review on DogToyChoice.
With a longer rope, there is more physical separation between the dog’s mouth and the owner’s hands. That can be useful during tug sessions, particularly with larger dogs that have a strong pulling style.
The extra length can also make the toy more interesting for multi-dog households. Current customer feedback on the 36-inch model includes owners describing it as suitable for two dogs playing together, although individual dogs and household play dynamics naturally vary.
Five knots also add weight and structure
Knots create thicker sections throughout the rope. This gives the toy a more substantial feel than a simple braided line.
That can make it easier for dogs to locate a gripping point during fast play. It also means the rope has a less uniform shape, which can make tossing and carrying more engaging.
For dogs that like to shake toys from side to side, the combination of long rope and multiple knots can create a satisfying movement without requiring squeakers or electronic components.
How the 5-Knot Rope Works for Tug and Interactive Play
Tug-of-war is the obvious use case
The Mammoth 5-Knot is fundamentally a tug toy, and that is where its design makes the most sense.
The rope is long enough to give the owner a comfortable gripping area while the dog grabs another part. The knots create obvious stopping points that can make the toy easier to hold.
Tug sessions can also provide a convenient way to add physical activity without requiring a large outdoor space. A short, structured game can involve pulling, shifting body weight, releasing, and re-engaging with the toy.
Because the Mammoth doesn’t depend on food or batteries, there is almost no preparation involved. The toy is ready whenever an appropriate play session begins.
A useful option for multi-dog play
The longer rope opens up another possibility: multiple dogs interacting with the same toy.
The 36-inch version provides several knots distributed along the rope, which can create separate gripping points for dogs. Retail customer feedback includes reports from households with two dogs using the toy together.
However, multi-dog tug should always be supervised. Dogs can become overly competitive around a shared resource, and owners need to watch body language and intervene if play becomes tense.
Tossing and shaking add variety
Mammoth doesn’t position Flossy Chews solely as tug toys. Its catalog specifically describes the line for interactive playing, tossing, and tugging.
The five-knot shape makes the rope easy to toss and provides several areas for a dog to catch or pick it up.
It won’t behave like a tennis ball or rubber fetch toy. A rope doesn’t roll or bounce predictably, and that difference can actually be useful for dogs that enjoy irregular movement and shaking games.
The Flossing and Dental-Play Concept
How rope fibers interact with the teeth
One of the main selling points of Mammoth Flossy Chews is the rope’s flossing concept.
When a dog chews and pulls on a cotton-poly rope, individual fibers can move around the teeth and along parts of the gum line. Mammoth describes this as a flossing action that occurs as dogs chew and play.
This is different from a solid rubber chew where the primary interaction comes from the dog biting against a molded surface.
The rope therefore gives dogs a combination of mechanical chewing and interactive pulling rather than simply presenting a stationary chew object.
It is not a replacement for dental care
It is important not to overstate this benefit.
A rope toy should not be considered a dental-treatment product. It cannot replace brushing, veterinary examinations, professional dental cleaning when recommended, or other evidence-based oral-care practices.
Its more reasonable role is as a toy that can make normal play involve some additional contact between rope fibers and the dog’s teeth.
The benefit depends on how the dog plays
A dog that actively chews and pulls on the rope is going to interact with the fibers very differently from a dog that simply carries the toy around.
This is why the dental-play feature should be considered an added benefit rather than the sole reason to buy the toy.
If your dog already enjoys tugging and chewing rope, the Flossy Chew design makes intuitive sense. If your dog doesn’t enjoy rope toys, the flossing concept alone may not make the product interesting.
Is the Mammoth 5-Knot Durable?
Built for active rope play
The Mammoth five-knot rope has a substantial construction and is designed for interactive play. That is different from saying that it is indestructible.
Current retailer feedback for the 36-inch model is generally positive, but the comments also illustrate how individual chewing styles affect lifespan. One recent customer reported that the rope lasted more than a month for a dog that destroys many other toys within a week, while another described expecting a particularly aggressive rope chewer to eventually destroy it.
Those reports are useful because they demonstrate why durability claims need context. A rope can be robust enough for tugging while still being vulnerable to a dog that methodically pulls individual fibers apart.
What real-world reviews suggest
Retailer reviews for the 36-inch version include several positive reports about the rope’s longevity. Some owners describe it as lasting longer than other toys, and one recent reviewer specifically described it as sturdy and resistant to coming apart quickly.
At the same time, the presence of positive durability reports should not be interpreted as a guarantee. Even a strong rope can eventually become damaged by an especially determined dog.
Another retailer currently shows a 4.6/5 rating across 36 reviews for the 36-inch product, with most ratings at four or five stars.
Know when to retire the rope
Rope toys require visual inspection.
Check the toy for excessive fraying, loose strands, damaged knots, or sections that your dog has begun pulling apart. If pieces of rope are becoming loose enough to be swallowed, the toy should be removed.
This is especially important for dogs that do not simply chew rope but actively attempt to consume the fibers.
The safest approach is to treat the rope as a supervised play item and replace it when its condition changes significantly.
36 Inches vs. 72 Inches: Which 5-Knot Size Makes Sense?
The 36-inch X-Large version
Mammoth’s current product documentation identifies the 36-inch 5-Knot model as X-Large 20040F.
This is the more practical size for many households because it provides a substantial rope without becoming extremely long.
It can work well for one dog and one person, and its multiple knots can also make it useful for supervised play between two dogs.
For a large dog that likes tugging, shaking, and carrying rope toys, the 36-inch length offers plenty of room to interact without being excessively unwieldy.
The 72-inch Super X-Large version
Mammoth also lists a 72-inch Super X-Large model, 20042F.
At six feet long, this is a completely different proposition from a conventional rope toy. The additional length can create more distance between dogs or between a dog and the person holding the rope.
Current retailer feedback for the 72-inch version includes owners who specifically appreciate the length when two dogs play together. One review described the rope as useful for keeping two dogs separated during tug play, while another reported extended use in a multi-dog household.
Why bigger isn’t automatically better
A 72-inch rope is not necessarily the better choice simply because it is larger.
For a single smaller dog, the extra length may be unnecessary. It can also create more rope to drag around, more material to store, and more opportunity for the toy to become tangled during indoor play.
The right size should be determined by the dog’s body size, play environment, and whether the toy will be used by one dog, two dogs, or a dog and owner.
Pros and Cons of the Mammoth FlossyTossy 5-Knot
What makes it appealing
- Five gripping points: Multiple knots give dogs and owners several places to hold.
- Long design: The 36-inch version provides more separation than compact rope toys.
- Excellent for tug: The construction naturally supports pulling games.
- Good for interactive play: It encourages owner-dog engagement rather than solitary chewing only.
- Multi-dog potential: The long rope can provide multiple gripping positions during supervised play.
- Flossing concept: Rope fibers can interact with the teeth during chewing and play.
- No complicated mechanisms: There are no batteries, squeakers, or food compartments to maintain.
- Different sizes available: Mammoth offers both 36-inch and 72-inch five-knot models.
Things to consider
- Not indestructible: Persistent rope shredders can damage it.
- Large footprint: The 36-inch version takes more space than a compact rope toy.
- May be too large for small dogs: The five-knot line starts at a substantially larger size than Mammoth’s small three-knot models.
- Requires inspection: Frayed or loose fibers should not be ignored.
- Not a food puzzle: Its mental engagement comes primarily through physical interaction rather than problem solving.
- Multi-dog play needs supervision: Shared tug toys can create competition between dogs.
Who Is the Mammoth 5-Knot Best For?
Dogs that love tug-of-war
This is the clearest audience for the product.
If your dog regularly grabs a rope and immediately starts pulling, the five-knot design gives that behavior plenty of room to work. The longer construction also gives the owner a comfortable distance from the dog’s mouth.
Large dogs that enjoy vigorous interactive play may particularly appreciate the substantial size of the 36-inch version.
Households with multiple dogs
The longer rope can also be useful for homes with multiple dogs that enjoy supervised tug games.
The 36-inch model has several gripping points, while the 72-inch version provides considerably more length. Current customer feedback on both sizes includes examples of owners using the ropes with two or more dogs.
However, owners should always monitor interactions. A toy should never be used to encourage competition between dogs that already guard resources or become tense during shared play.
Dogs that enjoy chewing rope
The Flossy Chews concept also makes sense for dogs that like to chew cotton-blend rope.
The fibers give the dog a different chewing experience from rubber or nylon. The five knots add thicker sections that can be easier to grip with the back or front teeth.
But dogs that immediately swallow rope fibers are a different case. If your dog repeatedly consumes pieces of rope, this may not be the right toy to leave available for unsupervised use.
How to Use the Mammoth 5-Knot More Safely
Keep tug sessions controlled
Use the rope as an interactive toy rather than encouraging uncontrolled pulling around furniture, stairs, or other obstacles.
During tug, keep your hands on the designated rope area and avoid placing fingers close to the dog’s mouth. Controlled movement is preferable to sudden, violent jerking.
If two dogs are playing with the rope, pay attention to body language and stop the game if either dog becomes uncomfortable or overly possessive.
Inspect before and after play
Make rope inspection part of your normal routine.
Look at the knots, outer fibers, and ends of the rope. Small amounts of normal wear are not necessarily a reason to immediately discard a toy, but substantial fraying or loose pieces are warning signs.
Once the rope is damaged enough that pieces can be pulled free and swallowed, continuing to use it is not worth the risk.
Don’t confuse durability with permission to chew endlessly
A well-made rope can survive plenty of interactive play without being suitable for unlimited unsupervised chewing.
The product’s strongest use case is active interaction: tugging, tossing, shaking, and moderate chewing. That is different from handing the rope to a determined power chewer and expecting it to remain intact indefinitely.
Mammoth 5-Knot vs. Other Types of Dog Toys
Compared with a 3-knot rope
The five-knot design is larger and more substantial. Mammoth’s standard 3-knot line includes sizes from 15 inches upward, while the five-knot line begins at the 36-inch X-Large model in the current catalog.
That makes the 5-Knot more appropriate when you specifically want a long interactive rope rather than a compact toy for carrying and short tug sessions.
Compared with rubber chew toys
Rubber chew toys are usually designed around stationary chewing, bouncing, treat dispensing, or structured dental textures.
The Mammoth rope is much more about movement and interaction. Tugging is central to its design, and the long rope allows the dog and owner to participate together.
For households that already own a durable rubber chew, a rope such as the Mammoth can serve a completely different purpose rather than replacing it.
Compared with plush toys
Plush toys generally appeal to dogs that enjoy carrying, shaking, cuddling, or squeaking soft objects.
The Mammoth five-knot rope is more physically oriented. It provides resistance during pulling and a textured rope surface during chewing, with no stuffing or squeaker required.
Compared with fetch balls
A ball offers predictable rolling and bouncing, while a rope provides irregular movement and multiple gripping points.
If your dog enjoys both chasing and tugging, having both types available can provide more variety than relying on one toy for every activity.
Final Verdict
The Mammoth FlossyTossy 5-Knot is a straightforward rope toy that gets its appeal from size, length, and multiple gripping points rather than complicated features.
The 36-inch version is officially listed by Mammoth as the X-Large Flossy Chew 5-Knot Rope Tug, model 20040F, while the 72-inch version is the Super X-Large 20042F. Mammoth describes the Flossy Chews family as cotton-poly rope toys designed for interactive playing, tossing, and tugging.
Its five knots make it particularly interesting for tug-of-war. The longer layout provides more distance between the dog and owner, while also creating several places for a dog to grab. The same characteristics can make it useful for supervised multi-dog play.
The flossing concept is another useful feature, but it should be viewed as an additional benefit rather than a replacement for proper dental care.
Durability is more nuanced. Current retailer reviews include positive reports about the 36-inch rope lasting longer than other toys, but even those reports recognize that aggressive rope chewers can eventually destroy it.
Overall, this is best approached as a large interactive rope toy rather than an indestructible chew. For dogs that genuinely enjoy tugging, pulling, shaking, and chewing rope, the five-knot design gives them considerably more to interact with than a short, simple rope.
Frequently Asked Questions
What size is the Mammoth Flossy Chew 5-Knot?
Mammoth’s current catalog lists the five-knot rope in a 36-inch X-Large version, model 20040F, and a 72-inch Super X-Large version, model 20042F.
Is the Mammoth 5-Knot good for tug-of-war?
Yes. Tugging is one of the primary intended uses of the Flossy Chews line. The long rope and multiple knots provide several gripping points for interactive play.
Can two dogs play with the Mammoth 5-Knot?
The longer five-knot design can be suitable for supervised multi-dog tug games. Current customer feedback includes owners using the 36-inch and 72-inch versions with multiple dogs.
Does the Mammoth rope floss a dog’s teeth?
The cotton-poly rope fibers are designed to provide a flossing action as dogs chew and play. This can be considered an added dental-play benefit, but the toy should not replace brushing or professional veterinary dental care.
Is the Mammoth 5-Knot indestructible?
No. Like other rope toys, it can eventually be damaged by determined chewers. Inspect the rope regularly and remove it when substantial fraying, loose fibers, or other damage develops.
Is the 72-inch version better than the 36-inch version?
Not necessarily. The 72-inch version is useful when you specifically want a very long rope, particularly for certain multi-dog or distance-oriented play situations. The 36-inch version is more manageable for many households. Mammoth lists both as separate five-knot models.
What is the difference between the Mammoth 5-Knot and 3-Knot?
The five-knot line is substantially larger in the current Mammoth catalog. The 3-knot family includes 15-, 20-, 25-, and 36-inch models, while the five-knot family is listed at 36 and 72 inches.
Explore More Dog Toy Guides
If you’re comparing the Mammoth 5-Knot with other types of dog toys, these guides may help:
- Chew Toys — explore toys designed around chewing and gnawing.
- Fetch Toys — find toys for chasing, retrieving, and active play.
- Interactive Dog Toys — explore toys designed for active engagement.
- Heavy Chewer Toys — compare options for dogs that destroy ordinary toys quickly.
- How to Choose Dog Toy Size — learn how to select an appropriate toy size.
- How to Choose Safer Dog Toys — practical guidance for selecting and inspecting dog toys.
- How Often Should You Replace Dog Toys? — learn when worn toys should be retired.
Ready to Try the Mammoth 5-Knot?
If your dog loves tugging, pulling, shaking, and interactive rope play, the Mammoth Flossy Chew 5-Knot offers a long, substantial design with five natural gripping points and a flossing-style rope construction.