No need to call a special one: http://images.google.com/images?q=tux

Whether this proves or disproves the point probably depends more on your personal definition of "cute and cuddly".

Interestingly, that image search shows the Crystal Tux designs (one shows up second in that search for me - it's shiny, rounder, and has unevenly sized eyes) is nearly as popular as the classic Larry Ewing design in adaptations.