ALL the pets are doing it! They are still walking right through stuff. Stuff like the hedges, fences, walls, and even walking right through the machines! I even have the rabbits enclosed in a fence, and they go through that fence, too! Most of my pets (dogs and puppies, cats and kittens, and horses and donkeys) are open, because the room they have is very small. I don't mind them moving around. It just irritates me when they walk right through things. Even when whistle for them, I'd rather they go around stuff like that.
Hope the next update fixes this problem for good.
