My dog is not eating and is losing a lot of weight and drinking a lot of water. What could be wrong with him

My puppy drinks a lot of water. I keep it out for him all the time, but if you fill the bowl he'll drink the whole thing and then continue it again if u refill it. Also when u go outside and its rained or raining he's more interested in drinking the water off the grass and leaves and such than...

Hi my dog is a lab mixed with chow, he seems to be losing weight but doesn't show any signs of being sick. He's very playful everyday eats well but it seems like his weight has dropped off in the last 3 weeks. I am worried that he's to thin. Can someone please tell me what I can do to help him...

I volunteer every day mon-thurs and this lady brought one of those step things and apparently we walk 6.5 miles every day, but still I can't seem to lose weight, what do I need to do, eat salads all the time? Or go to the gym and get a harder work out? Any suggestions?

I know all dogs will munch on grass, but mine seems to be chowing down on it like it's going out of style! The only thing that worries me is she's been having trouble pooping because there is so much grass! She manages to push it all out, but the consistency isn't right and I can SEE the grass in...