Okay, well I have a dog, he is seven years old. Last night when I came home he acted sick, he wasn't interested in eating or drinking. When I took him outside he started to eat grass. When I took him inside he acted lethargic, and acted like he was in some pain. Several hours later he jumped oof the bed and ate a treat, drank some water and was acting fine. This morning I made an appointment for five oclock today because he still wasn't eating. He has ate a little so far, but still doesn't seem that interested in food. He is drinking water and is acting alright, he was playing earlier. So should I stll take him to the vets today, or wait and see if it persist? Could it just be his stomach upset? Thanks in advance.