How to express your thanks in numerous different languages, and how to reply when someone thanks you.
Report Abuse. Namaste Ramesh. Lions sleep 20 hours every day. Male lions sleep up to 20 hours per day (with one eye open so to speak.) While the females are the hunters the male lions don't and their job is to protect the pride (their harem so to speak).
Adult giraffes sleep the least, requiring less sleep than most other mammals. There is much debate about how many hours in total they sleep. Estimates vary between 1 and 5 hours in a 24 hour period, with most rest being taken as short naps of just a few minutes. It is the manner in which giraffes take their very fragmented sleep that captivates us. As with other ungulates, most of their rest time is taken while standing.