Speaking of
which, ever open a machine formerly owned by a
dog/cat owner?
All the time (we have several cats). I've never had any cat
hair
in my systems, since I don't allow the cats in the computer room
(except for my favorite cat, who likes to sleep in his basket in
the corner or on the back of my chair while I'm in there).
Unless they get into territorial marking, they don't stink them up much.
But, expect cat and dog hair. In particular, expect cat hair in
keyboards; cats take to keyboards like taxi drivers take to beaded seat
cushions!