thanks everyone, they truly are good suggestions. he won't be my last foster and I'm sure separation anxiety is something I'll be dealing with again.

I'll have to get on him about putting him in a crate at random times. I usually only crate him when I go to bed and when I leave, and those are probably the times he won't like so I'll crate him at odd times. I've been feeding him in the crate from the get-go, so he's good about jumping in there when it's mealtimes.

I'll see if I can find some bells somewhere. That's a great idea about associating the door with the bell. My last dog always pointed at the patio door and looked back at me - that was signal enough, even though he had stopped using the patio as his toilet long before.

I came home for lunch and took him to work this afternoon. I also took him to the SPCA for my volunteering and he was yapping away when I wasn't in his line of vision. But he got loads of puppy play and attention that's exhausted him so he's happily sleeping right now