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Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night. Matutinal, a classification of organisms that are only or primarily active in the pre-dawn hours or early night.
Black rhinos in captivity and reservations sleep patterns have been recently studied to show that males sleep longer on average than females by nearly double the time. Other factors that play a role in their sleeping patterns is the location of where they decide to sleep.
Sleep can follow a physiological or behavioral definition. In the physiological sense, sleep is a state characterized by reversible unconsciousness, special brainwave patterns, sporadic eye movement, loss of muscle tone (possibly with some exceptions; see below regarding the sleep of birds and of aquatic mammals), and a compensatory increase following deprivation of the state, this last known ...
Improvement to cognitive performance caused by exercise could last for 24 hours, a new study shows. Scientists also linked getting 6 or more hours of sleep to better memory test scores the next day.
Dynastinae or rhinoceros beetles are a subfamily of the scarab beetle family (Scarabaeidae). Other common names – some for particular groups of rhinoceros beetles – include Hercules beetles , unicorn beetles or horn beetles .
The first, a 2006 study in the American Journal of Epidemiology, found that, while white women and white men sleep over six hours a night on average, Black women sleep just 5.9 hours a night and ...
Gyrostigma rhinocerontis (also known as the Rhinoceros stomach botfly) is the largest fly species known in Africa. It is a parasite of the black rhinoceros and the white rhinoceros . Because the fly depends on the rhinoceros for reproduction, its numbers declined steeply as the black and white rhinos faced extinction.
The south-central black rhinoceros (Diceros bicornis minor), also known as the south-central hook-lipped rhinoceros or the lesser black rhino, is a subspecies of the black rhinoceros. In keeping with the rules of zoological nomenclature, the south-central black rhinoceros should be known as Diceros bicornis keitloa (Smith, 1836), a nomen novum. [3]