It keeps the pet closer to you, of course, but it also has a calming effect on the pet, especially older, senile, blind, squirmy, and young, fearful pets. It blocks out most of the rest of the room to the pet so they don’t feel threatened. Cats and bunnies especially appreciate the security of the wall. Most dogs will lean against the wall just a little to give themselves a feeling of security; imagine yourself on a high platform without having something to hold on to.