Most animals have a daily pattern of rest and activity. Some animals are more active during the day (daytime) and some are more active at night (night). How much do animals sleep??, good, depends on the animal:

Species	Dream (% of the 24 hours)	Dream (hours / day)
Giraffe	7.9%	01.54 hours
Horse	12.0%	02.54 hours
Donkey	13.0%	03.06 hours
African elephant	13.8%	03.18 hours
Sheep	16.0%	03.48 hours
Cow	16.4%	03.54 hours
Asian elephant	16.4%	03.54 hours
Goat	22.1%	05.18 hours
Human (old man)	22.9%	05.30 hours
Grey seal	25.8%	06.12 hours
Guppy fish	29.1%	07 hours
Pork	32.6%	07.48 hours
human adults	33.3%	08 hours
Guinea de Indias	39.2%	09.24 hours
Chimpanzee	40.4%	09.42 hours
Squirrel monkey	41.3%	09.54 hours
European Hedgehog	42.2%	10.06 hours
Star nosed Mole	42.9%	10.18 hours
Baboon	42.9%	10.18 hours
Dolphin bottle snout	43.3%	10.24 hours
Dog	44.3%	10.24 hours
Jaguar	45.0%	10.48 hours
Duck	45.0%	10.48 hours
Conejo	47.5%	11.24 hours
Rhesus monkey	49.2%	11.48 hours
Mouse	50.3%	12.06 hours
CAT	50.6%	12.06 hours
Guepardo cheetah	50.6%	12.06 hours
Rat	52.4%	12.36 hours
Gerbil	54.4%	13.06 hours
Leon	56.3%	13.30 hours
ornitorinco	58.3%	14.0 hours
Golden Hamster	59.6%	14.18 hours
Three-toed sloth	60.0%	14.24 hours
Huron	60.4%	14.30 hours
Western Toad	60.8%	14.36 hours
Chipmunk	62.0%	14.54 hours
Tiger	65.8%	15.48 hours
Shrew arboricola	65.8%	15.48 hours
Human (baby)	66.7%	16 hours
Buho mono	70.8%	17.0 hours
The North American opossum	75.0%	18 hours
Python	75.0%	18 hours
Giant Armadillo	75.4%	18.06 hours
Bat	82.9%	19.54 hours

Table How animals sleep? It was adapted from four sources:

1 – Aserinsky, (E)., the status of lids at birth: the relationship with adult mammalian circadian patterns, in REM sleep , edited by BN Mallick and S. Inoue, Narosa Publishing, New Delhi, 1999, p. 7.
2 – Campbell, the SS and Tobler, (I)., the dream of the animals:. A review of the duration of sleep through the phylogeny of neuroscience and Bioconductual Rev. , 8:269-300, 1984.
3 – Kryger, MH, Roth, T. and Dement'yevskoye, WC, Principles and practice of sleep medicine , WB Saunders Co., Philadelphia, 1989, pp 39-41.
4 – Tobler, (I)., siesta and transients in mammals, dream and monitoring: Cronobiológico aspects, Behavior and medicine of the siesta , edited by DF Dinges and Broughton RJ, Raven Press, New York City, 1989, pp 9-31.