The antlers of the North American wapiti grows 2 cm per day.
Chinese water deer is the only deer species that has long canine teeth instead of antlers.
The smallest deer is just 25-40 cm tall! It is the Northern Pudu who lives in South America.
The offspring of all deer species take their first steps 30 minutes after birth.
Deer are ruminants and their multi-chambered stomach is perfectly adapted to the digestion of plant-based food.
400,000 years ago there was deer with an antler span of up to 3.6 meters.