• The Siberian musk deer’s sacrum is 5–10 cm higher than its withers due to long hind legs. Its hind legs are unusually long, so the sacrum is 5–10 cm higher than the withers.
• The Siberian musk deer’s fur is waterproof and retains heat even under snow. Snow beneath it does not melt, unlike under reindeer, moose, or roe deer.

The Siberian musk deer stands between 17.8 centimeters and 4.5 meters tall, with a body length ranging from 80 centimeters to 1 meter; the species weighs 10 kilograms. Embryonic stage individuals have a body mass of between 1 and 400 grams. The young, in the “fawn” stage, weigh from 400 grams to 5 kilograms and measure between 40 and 60 centimeters in length. Adult specimens weigh from 11 to 18 kilograms and have a body length of between 85 centimeters and 1 meter.