First thing I would do is visit the vet. Maybe a UTI? my Echo acts very odd when she has a UTI, hiding behind furniture is a big one for her when she is in pain.
Something has him freaked out to where he does not want to go out. Is he reacting to any of the other dogs getting on the bed with him?
Something has him freaked out to where he does not want to go out. Is he reacting to any of the other dogs getting on the bed with him?