hi all i have 2 cats ...elvis is diabetic and halle whi is not..i really feel i had an issue with the food the vet gave for elvis. hills prescription w/d wet and dry...she said it was fine to feed to both littys..but halle has gained weight...she wont let me take her bg (just to check) i am goning to have my husband try (she likes boys ) could the food make hr balloon like this