In 1985, this was a special edition model to commemorate the acquisition of Breyer Animal Creations by Reeves International. 500 models were released with a hang tag. This model has the round Breyer Molding Co Copyright Stamp, the only Little Bit to have this stamp (others had just the B.M.C. stamp). Per the JAH article, "The round stamp was discontinued after the acquisition of Breyer by Reeves International." However; all models released since this one, have that same round Breyer Molding Co stamp...so I'm not sure what was meant by 'discontinued'.
In 1990-1992, it appears another 500 models were released without the hang tag.