Hi again. Thanks for the info. This behavior is either that he likes the coolness of the tile floor in the bathroom. Many dogs like that even if it is not too hot. If you do not have tile in the bathroom, scratch that theory. The only other thing I can see is that he has been traumatized in some way causing this behavior change. I say this because from what you say about him being timid, this tells me he is very sensitive. Something around your bed or in the room may have made a loud noise or has frightened him in some way. It does not appear to me to be a medical condition, just some type of emotional injury.
If this is the case, you will have to make attempts to reestablish his security in your room by coaxing him in with treats, paying a lot of attention to him, playing with his toys in that room and constant talking to him in a smooth, calm voice.
Does that make sense?
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