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It looks like a piece of Obsidian from our nearby lava flows, but it’s Gnawt-a-Rock™! This durable throw toy is inspired by natural volcanic glass formed by rapidly cooling lava from Pacific Northwest volcanoes. Unlike Obsidian, the Gnawt-a-Rock is made with natural latex rubber, with a faceted, gum-massaging surface. Its irregular shape creates an erratic bounce, and it has a treat-dispensing design for interactive play and reward.

Part of the Pacific Gnaw-west toy collection inspired by Ruffwear’s home of Bend, Oregon, and its natural surroundings.

Diameter: 4.5 (in), 11.5 (cm)

Please note: If any part of this toy becomes loose or detached, immediately take the toy away from the dog and discard the toy.

HOW DOES IT WORK?

Key Features

Additional Features

  • Erratic bounce for engaging fetch
  • Faceted surface for gum-massaging
  • Size suitable for large-mouthed dogs
  • Made from natural rubber, a renewable, sustainable resource
  • Made in Vietnam

Washing Instructions

  • Top rack dishwasher safe
  • Dish soap
  • Air dry

Trail Tested Promise

All of our products are rigorously field tested and we proudly guarantee against defects in materials and craftsmanship.

Great Companions

Ratings & Reviews

Customer Reviews

Based on 24 reviews
5 Star
79% 
19
4 Star
17% 
4
3 Star
4% 
1
2 Star
0% 
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1 Star
0% 
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AL
11/23/2018
Alice L.
United States

Love this thing

Our pup usually can chew through any rubber toy - but not this one. He loves it. Easy to put the treats in and when it gets gross, we put it in the dishwasher. It’s a huge hit.

SJ
11/15/2018
Shannon J.
United States

Perfect!!

I love this toy! It’s soft enough that it doesn’t make a lot of noise (like the hard plastic ones that clunk around on hardwoods and against furniture) if used inside the house, but firm enough rubber that my girl can’t rip it apart. Easy to fill and clean. Doesn’t fit under most the furniture, so doesn’t get lost easily. This is my favorite food puzzle treat, I have a video of my girl using it on Instagram georgie_phil_stumpylimbs if you want to see it in action. My girl is an aggressive chewer and loves it, my boy does not care to chew, but loves it. It’s so great, I’m ordering a second one.

A Ruffwear Customer
EA
10/18/2018
Elizabeth A.
United States

Great for meals

This toy makes mealtime fun. I will pour in my dog’s food, and let her have a blast. The holes are small enough that it’s a challenge for her, but dispenses enough at a time that she stays engaged.

VM
09/20/2018
Vince M.
United States

Instant amusement

Two Border Collie / Lab pups both want control of the Rock. And they did not destroy it!

LL
08/08/2018
Linda L.
United States

Love the Gnawt-a-Rock

Easy to load with treats, my dog loves it!