Dolphins and whales do not sleep for the first month of their life.
Giraffes. the tallest land-living animal, sleep only 4 to 6 hours a day.
Cats along with mice, pigs, and cheetahs can sleep for 12 hours per day.
Rats, gerbils and lions can sleep for 13 hours a day.
Squirrels sleep about 14 hours a day.
A human baby of age 1-12 months can sleep 16 hours a day (in between feedings and diaper changes).
The Lemur sleeps for 16 hours a day.
Owl Monkeys will sleep 17 hours a day.
Armadillos and tigers go to sleep for about 18-19 hours a day.
Brown Bats sleep for 20 hours a day and Koalas sleep up to 22 hours a day. I'm tired just thinking about this stuff.