For the last two days my ten month old dog keeps drinking water until he makes himself sick and pukes it up. He has never had this problem until yesterday. I figured yesterday it was because we went to the park and it was a little hot so I thought he may have just been really thirsty and didn't stop himself. However, today they haven't done much of anything but sit around in the air conditioned house and he just did it again. He seems totally healthy otherwise. I just don't get this. Other then the obvious answer of limiting and watching his water intake has anyone run across this or have idea what might be going on?