I have a Westie and he is 2 years old. I house trained him when he was little. Over the past couple of months, he has peed in my bed at night a few times. Then when I get up to take him out after I realize he has peed, he goes straight to the water bowl and drinks a lot of water. I have not tried taking up his water at night, because during the day it seems like he never gets enough water. Please help! Thanks