As for the "come and go" nature of Ace's problem, kidney stones come to mind. I know people who have a bad day or two, then are better, then it gets worse again.
The other thing that comes to mind is that maybe Ace has asked difficult child to let him out those nights and difficult child has not, so Ace has had to go inside because difficult child wouldn't let him out. Just a thought.
Until you get a thunder shirt, you might try a regular dog shirt that fits snugly. It can help though not as much as the other one.
The other thing that comes to mind is that maybe Ace has asked difficult child to let him out those nights and difficult child has not, so Ace has had to go inside because difficult child wouldn't let him out. Just a thought.
Until you get a thunder shirt, you might try a regular dog shirt that fits snugly. It can help though not as much as the other one.