Norris is being really weird tonight. He is drinking large amounts of water, and then of course two hours later I take him outside and he urinates copiously (no blood in the urine, just very watered down of course). I have a metal bowl that probably holds about two gallons of water, and he has drank almost the whole thing in about four hours. Basically, he drank a bunch, then went out to pee in two hours. Then as soon as he came back inside he drank a bunch more water. Then two hours later out to pee again, just now. And as soon as we got back to my room, he drank the rest of the bowl. He's never done this before tonight. He isn't acting uncomfortable in any way, he has eaten normally today. He has only been fed his kibble, no treats. He didn't eat any trash off the ground recently. He pooped normally on his walk about noon. I haven't noticed any lethargy. There hasn't been any vomiting. I'm just really confused.