Reptomammal

A reptomammal is any species having both reptillan and mammalan traits, such as having scaly skin yet giving live birth.Examples of reptomammals include the Tauntaun, Wampa, and the Rancor.

http://starwars.wikia.com/images/b/bd/Comic_Tauntaun.jpg The Tauntaun and Wampa, two reptomammals.