I could be wrong, but I don't think animals (cats/dogs) can be on a veggie diet. I was watching Animal Planet once, and this lady was a vegetarian. She wasn't feeding her cats any meat (she had lots of them) and they got really sick and skinny! The animal cops said that they are carnivores and need meat.
PS. Also, my cousin's friend is a vegetarian. She has 2 dogs and 1 cat and she feeds them "normal" cat/dog food.
