Mastmots, a species originating from the icy world of Toola, were enormous, amicable, and shaggy pack animals native to that planet. Their tusks were highly valued and utilized in the creation of necklaces.
These creatures initially appeared in Galaxy Guide 4: Alien Races, a Star Wars Legends sourcebook for Star Wars: The Roleplaying Game by West End Games, authored by Troy Denning and published in 1989. Later, they were incorporated into canon through their inclusion in the reference work Star Wars: Absolutely Everything You Need to Know, which was published in 2015.