My daughters cat looks as if she has clogged anal glands. She is kind of swollen and puffy back there and looks as if she has clogged glands. I got her an appointment for Friday, the soonest they could get her in. She doesnt seem to be in distress about it, but I can tell something isnt right and I have had this problem in my small dog but never in a cat. I'm sure they will express them and maybe some antibiotics for the problem, but should I put her on a cat food with a higher fiber content? They are currently eating Nutro Natural Choice Indoor Formula and it has 3 percent fiber. The hairball formulas seem to have a higher fiber content than the others or could I mix something with a higher fiber content with their current food? Any suggestions?