Sleep+in+animals

Table 2. Representative Total Sleep Requirements for Various Species ||~ Species
 * ~ Average Total Sleep Time (hours/day) ||
 * brown bat ||= 19.9 ||
 * python ||= 18.0 ||
 * owl monkey ||= 17.0 ||
 * human infant ||= 16.0 ||
 * tiger ||= 15.8 ||
 * squirrel ||= 14.9 ||
 * golden hamster ||= 14.3 ||
 * lion ||= 13.5 ||
 * gerbil ||= 13.1 ||
 * rat ||= 12.6 ||
 * cat ||= 12.1 ||
 * mouse ||= 12.1 ||
 * rabbit ||= 11.4 ||
 * jaguar ||= 10.8 ||
 * duck ||= 10.8 ||
 * dog ||= 10.6 ||
 * bottle-nosed dolphin ||= 10.4 ||
 * baboon ||= 10.3 ||
 * chimpanzee ||= 9.7 ||
 * guinea pig ||= 9.4 ||
 * human adolescent ||= 9.0 ||
 * human adult ||= 8.0 ||
 * pig ||= 7.8 ||
 * gray seal ||= 6.2 ||
 * goat ||= 5.3 ||
 * cow ||= 3.9 ||
 * sheep ||= 3.8 ||
 * elephant ||= 3.5 ||
 * donkey ||= 3.1 ||
 * horse ||= 2.9 ||
 * giraffe ||= 1.9 ||
 * Sources: References [|1], [|5] , [|16] , and [|36] . ||