Housetraining & Play

Thor peed in his crate again. I think he may have had other episodes in the crate but my sense of smell is so impaired that I cannot be sure.  I am taking him out every hour, and he almost always pees outside.  At this point, I am starting to wonder if there is something amiss.  I'm going to try to get a urine sample for testing. 

I'm now giving him brief periods of (supervised) freedom in the house.  He's doing very well with this.  He found an old tennis ball which he likes to carry around.  He will release it when asked and chase it when thrown.  He'll return to me with the ball but is more reluctant to release it the second time.  I haven't asked for a third!  I am so thrilled that he likes to play and is including me in his games.  I'll probably introduce tugging soon; I wanted to be sure he had a good release first.  I'm thinking I'll put the release on cue before we start tugging.