Pitz

Pitz, (Canis fugaraglobus) the dog in Creatures 2, was strongly believed to be a joke played on P.F.Magic, the creators of the "Petz" games which were a much simpler form of virtual life. The name Pitz would seem to be a dead giveaway, he does not need to eat, also he even makes some noises which are very similar to those of the P.F.Magic Dogz.

Note: TrinikyK has made a Christmas Pitz, it can be found here