Thanks for updating this! I'm glad it was nothing more serious. Every once in awhile a mouse makes it in to my attic, those things are just a P I T A.

I am probably pretty late to the party on this one but I had a similar issue with Cloud for a few weeks. Constant pacing, fear or everything in sight. If I had anything in my hands he would perk up and peace out. Outside he was perfectly fine and getting him back in the house was difficult.

What I did: I spent a lot, A LOT of time on the ground with him. Basically any chance I had to get on my knees or butt and just pet/chill out with him I took. Idk if it was a confidence thing or what but the results of doing this were pretty amazing.

I can only guess that the sudden change in scenery might of drove him a bit panicky, and going between my gf's house and mine. Boy am I glad that episode is behind us though, its not fun to see pooch like that.