Mustang Saga

My life has been hijacked by a very cute guy I found on the side of the highway.

He's a little rough around the edges.

But he's a big love.

The whole family loves him, and nobody has claimed him yet (I did EVERYTHING in my power to report he's found, and checked for a microchip - he had no collar). We just happen to have an "opening" for a dog, although we hadn't planned on getting another for a while. The only hitch is that this guy has a severe separation anxiety problem. I don't know how anyone could possibly have abandoned him, because he's like velcro! He's always right beside me. It's very flattering, but it becomes a problem when I want to leave the house or go into the grocery store. Right now I can take him in the car (although it's not fun for him) so I can go places where I can have a dog attached to me, but I can't go shopping and it's difficult to do anything with the horses because he barks and cries when I tie him up nearby. I won't even go into what he did to my bathroom last night when I had to leave him for a while. I hope he settles down or we find a safe way to contain him while we're gone. I have a dog crate that may be big enough, but I don't think that's a good idea. What we need is a kennel... My fenced dog area doesn't hold him.

Suggestions? I've dealt with separation anxiety before but this is much worse than anything I've seen.