Definitions range widely, but the common answer seems to be that a
 "personal furry" is someone's anthropomorphized animal "alter-ego".  This
 can mean a number of things:

 a) It could be a "furry" character that the person roleplays on FurryMUCK
    (or some other roleplaying environment/game) that the person considers
    to be a representation of him/herself.
 b) It could be an anthropomorphized animal character that represents the
    person in cartoons or drawings.
 c) It could be a person's "totem" or favorite animal type.

 One's attachment to and attitude toward one's "personal furry" (if at all)
 varies greatly.