=whenever they feel comfortable, away from their prey.=
Zebras sleep at night.
Yes.
sleep
the answer is no
they sleep but they do not hibernate
There are a few things that zebras will do in their day including sleep. Zebras will also graze and drink water.
masterbate
Eat, sleep and mate.
yes if they are comfortable enough
About 2 to 3 hours a day. Usually they stand when they sleep. They lock there legs to make them relax and they fall a sleep.
Zebras usually sleep or doze standing up during the day; some may be brave enough to lay down for a few minutes or so for some real deep REM sleep. Usually some of the herd stays awake to watch for predators.
Do you mean lions? If so probably sleep, eat zebras and mate.