Grrr. This just makes me upset. The same thing happened to my Jed at the "fancy" pet babysitters! Picked him up after 4 days - 3 nights and he had some crusty stuff on one side and around his mouth. The gal handed me his bed and told me they had to wash it because he pee'd on it.

WHAT?
That's NEVER happened before. Got home, bathed him and sure enough...he was throwing up this yellow bile gunk! THAT is what was on his bed NOT pee!!! Took him to the vet and was told it was stress. She said to let her know whenever I had to board him again and she would have to give him some pills for stress to keep this from happening again. sigh. My boy doesn't do well without his momma!