So I found this very skinny cat at my house yesterday, was able to catch, and is currently residing on my tack room in barn. My question is diet. He eats everything I bring him in a matter of minutes and I am Concerned he will get sick from eating fast. How much and how often should I feed him? Also will be taking him to vet soon and was wondering should I have him FIV tested. And if pos what should I do??