A little stray kitten (maybe 2 months old) came to our house and has been coming by for food and comfort. I think it's a "she" though she is orange. Anyway, she is very thin and her little belly really pumps even when she's resting. At first I thought it was because she's so thin and so you can see her breathe, but now I'm not so sure. She eats well. We have 5-6 other strays coming to feed and I want to protect this little thing. Some of the others have shown aggression towards her. My sister is considering taking her in, but I'm sure she won't want to if there is something wrong with her (she's not mean, but one of her other cats died last week after expensive medical care.) Has anyone seen something like this before?