LOL Poor Rusty...can't get through the opening. Very smart idea! Now if there was a way to invent a gate that cats can get through to get to a litter box but yorkies couldn't enter
Maybe you can get to work on that???
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~Magnifique Yorkies~
Purchasing from backyard breeders, pet shops, and puppymills perpetuates the suffering of other dogs.
Educate yourself and buy from reputable breeders or rescue.