My 12 week red heeler pup came from a farm environment he was doing really well besides fleas and a bad case of worms he was treated with vets formula for his worms and seem to be gone its now 3 days later and he won't eat and all he wants to do is sleep and when it comes to waking him I need to physically move him then he is OK for a small amount of time 5/10 minutes then he's asleep again

