Reindeer have many adaptations to survive the cold. Their hooves expand in summer when the ground is soft and shrink in winter when the ground is hard. Some subspecies have knees that
6 ways reindeer are adapted for extreme cold | Discover Wildlife
Caribou Migration
Reindeer and their Arctic Adaptations | Glasgow Science Centre
Reindeer of the Arctic, Facts and Adaptations - Rangifer tarandus, also called caribou
Adaptations - Physiological Adaptations to Cold Environments
Reindeer Printout- EnchantedLearning.com
Reindeer in the Arctic: How Do They Survive? - AZ Animals
Rangifer tarandus
Reindeer in the Arctic: How Do They Survive? - AZ Animals
Reindeer (Animals of the Arctic): Rebecca Pettiford: 9781626179394: Amazon.com: Books
Reindeer in the Arctic: How Do They Survive? - AZ Animals
Animal Adaptations | eMedia
The magical lives of reindeer
How well do you know Rudolph? Or, how the reindeer has adapted to its extreme environment - Oxford Education Blog