Koala
Average sleep time: 18-22 hours per day
Sloth
Average sleep time: 20 hours per day
Hippo
Average sleep time: 16-20 hours per day
Lion
Average sleep time: 18-20 hrs per day (sometimes a whole 24 hours!)
Cat
Average sleep time: 18 hours per day
Lemur
Average sleep time: 16 hours per day
Panda
Average sleep time: 10 hours per day