Animals can usually sense when something is wrong, and maybe the cats are scared. If a cat can be trained to come to dinner with a bell (or whatever) I'm sure they can comprehend that they have masters and when one vanishes it probably freaks them out. My dog was freaking out before there was a big earthquake here in washington like a year ago, so maybe animals can sense more than we think. That is odd, though.
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previous name: 84stangLX
'84 Mustang 5.0 LX
my LX
'89 Mustang GT
my GT