Mochi might not have the most powerful jaws, but she has a very persistent nature. For example, last week, I got her a chew toy, and she set right to work tearing pieces off it.
After some online research, I decided I needed to get a particular toy from West Paw. "Our toughest treat toy, Tux has stood the test of time and up to some fearsome fangs."
So far, so good. And Mochi's chew/treat toy, like her collar and leash, is guaranteed. Shout out to Wests Paw--and to the Barrington Pet Valu, where they gave me a refund on the destroyed toy as I bought the new and far tougher toy.