I searched the forums, but didn't see anything that pertains ... wanted to see if anyone else has this issue. My dood will drink especially heavily after a hearty bout of play, and almost always vomits all the water back up. He doesn't vomit his water when he drinks pre-play, only post-play. I am also concerned that he is not drinking enough. His urine is very yellow, and it seems like he goes forever before he has to pee. I thought the local water might taste ick (it does to me!) so this summer we got him a Big Dog Drinkwell that filters his drink - it always has clean filters and plenty of fresh water - he just doesn't seem that interested until he is so thirsty, he can't hold it down.