Birth 0 days
After a gestation period of around 220 days, a single calf is born weighing around 2.5-9kg (5.5-19.8lb). Within a few minutes the calf can stand and after an hour it is able to walk.
Learning to run 1 day
By the end of the calf’s first day it is able to follow its mother closely and can outrun an Olympic sprinter. It joins the rest of the herd by nightfall and must keep up to survive.