Rex is on Iverhart Max Heartworm Prevention, which is supposed to prevent tapeworms, heartworms, hookworms, and roundworms.
Lately he has been looking as skinny as a skeleton,
so I've been feeding him a lot more to make him gain weight, but he just doesn't seem to be gaining any. It's getting expensive too. I give him 9 cups of Taste of the Wild dog food (He should be getting 3 - 4 according to the package), a whole chicken breast, an egg, a carrot, and some supplements every day, and STILL he is very skinny. The past few days he has been feeling sick; He vomited a few days ago. Today he had diarrhea, which also had little white or tan worms in it. I don't think he has eaten anything weird recently and he is on a current dewormer every month, so what could have caused these worms and how do I get rid of them if the Iverhart Max does not kill them? How serious are these worms? I'm guessing these worms are the reason he is getting so thin.