I have a 10 week old Lab/Shepherd mix. I know it takes time and getting mad doesn't help, but he only poops outside. I might be giving him more credit by assuming this but I think he pees inside just so he can go out and eat grass. I feed him 3 times a day and take him out just about every hour (give or take a few minutes). I am home all day long so I have plenty of time to watch him and he plays with his toys and runs around and just out of nowhere bam pees. any thoughts?