I am hoping someone can direct me to a site that will have more, in-depth info on why cats vomit; most sites I have viewed are very generalized and just give the same "possibilities". My Alley (only 3 yrs old) is very picky eater and I only have her eating Purina Adult Special Care for Sensitive Systems--I believe this agrees with her; and the only treats she gets are cat milk and (people) tuna, both only occasionally. She doesn't vomit the same day I give her the treats, necessairly. I am suspecting she has digestive problems--maybe defects or ? Other than the intermittent vomiting, she appears to be healthy; this is also according to her vet. Any suggestions on where I can get further info would be appreciated