Munchkin ate the rubber rim around the bottom of her water bowl. She keeps eating until there is nothing left. Silk , on the other hand, eats only when she is hungry. Munchkin never stops eating. I took her to the vet, when she had eaten the rubber and was told that she was pass it. Silk has got to the point of lying across the pellets bowl to stop Munchkin from eating all the pellets! The vet told me that animals can have the same types of disorders as humans and that she has pica.