My 14 week old, Abraxas (Brax), drinks so much at night. I fill the bowl twice, and he drinks a third bowl dry on our trips outside. No changes in food, but he has gained 15 lbs in 3 weeks. I wondered if maybe he's going through another growth spurt, and I haven't been feeding him enough to keep up with it...I just wondered if anyone else had seen this. I'm starting to worry. Thanks.