My puppy vader is suddenly obnoxious about food... he is crying and pawing at his exercise pen and then when he is let out he goes racing for the food container. Could he have worms? I have a vet appt tomorrow at 4... should i try to go sooner? This poor pup can't catch a break. He is skinny thanks to the parvo so we have been feeding him a little extra (recommended amount plus a half or quarter cup more divided over 4x a day) and he is on Wellness LBP. He is 11 weeks today! What should i be looking for? Can the humans and/ or my 3 year old GSD Riley get the worms from him?!