My RB tuxie Mortimer would jump down behind the washer and dryer and then couldn't get out. He only did this when a friend of my son's would come to visit - he either hated him or was scared of him - for some unknown reason.

My son would have to pull the washer out to get Morty out, so after doing this several times, I would just close Morty in my bedroom when the offending party came around.

Myndi hated this guy too. Don't know what the animals saw that we didn't.