Sven The Reindeer - Disney's Frozen

Sven is the loyal pet reindeer and companion of Kristoff, a rugged mountain man. Together, the duo run an ice harvesting business (which has greatly enhanced Sven's overall strength, making him quite the force) and reside outside the city of Arendelle in the Valley of the Living Rock, where a community of trolls thrive. The trolls adopted both Kristoff and Sven when they were children, and raised them. Also, according to Frozen: The Essential Guide, Sven was rescued by Kristoff as a young fawn,