My two year old cat Maia got spayed over a month ago and she used to eat just a little bit before not even half of a can of fancy feast and now she's devouring her food. I went away for two weeks and left her with my boyfriend and when i came back i saw that she gained weight. I haven't actually weighed her but I can see she's gotten bigger. Is this normal? Have you had a similar experience after spaying your kittens?