has some white (or bright light blue) print on the snout and lower jaw, compared
to the light bluish gray one (and presumably the magenta one) which doesn't
have it, also the light bluish gray one
has the number "39738"
molded on it. (This isn't from a "new" set, but just an old medium
blue one I had in a lot and a light bluish gray one I got on bricklink to confirm).
The molds appear identical aside from the number difference.