Hi, my pups is american staffy, almost 9 weeks old. He's always active cheerful and never been picky on food. Last night is the last meal he had (canned puppy food) at 9pm. Now is Saturday afternoon 4.30, and he has not touch his meal, he drinks only little water. I did try give him chicken necks instead of puppy can food, but he doesnot touch it either. My vet has closed an hour ago, please help! Do I need to worry? My email: >Removed<