The sun bear, a native species of Southeast Asia, is exclusively diurnal under natural circumstances, but flipped to nocturnal after encountering human researchers. (Connormah, cc-by-sa-2.0) ...

Nocturnal. Nocturnal behavior means the animal is active at night, which some people believe is the deer’s sleep pattern. Diurnal. Diurnal sleep and waking patterns mean the creature is most ...

CBC ParentsActivities Nocturnal Animals Sensory Bin By Ann Harquail, My Nearest and Dearest Nov 18, 2014 ...

Eclipses can fool certain animals into thinking that it’s the evening, causing them to to revert to their nocturnal or crepuscular behaviors. For example, in 1932, researchers observed crickets ...