Hi, my rabbits, Maddy and Chris, have been eating a diet of mostly hay these past weeks. Before, they ate a lot of pellets and Chris was over wieght. now they have both lost some weight(I can very clearly feel their back bone). Is this bad?? They are eating well and had parasite control a few weeks ago(REVOUTION kills mites and fleas as well as intestinal parasites). They have beed weighed by the vet twice and they hadn't lost too much weight. How do i know if my rabbits are underweight?????????
Note: my rabbits do not have any pellets in their diet.