Olive is 5 months old, and was doing all of her urinating on her wee wee pad. The last week or so there have been some major puddles on the floor, and today my husband thinks she went in her sleep as she was asleep in a puddle in the afternoon. She has been getting really good at going outside, but as we can't be around every minute, we've left the wee wee pad there for emergencies. She just had her pre-spay check up and blood work, and everything was normal. She doesn't seem to drink an excessive amount. She does lap up quite a bit if she's been outside running around, but otherwise it seems to me that she is drinking normally. Any ideas what's happening here?