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Animal infanticide is studied in zoology, specifically in the field of ethology. Ovicide is the analogous destruction of eggs. The practice has been observed in many species throughout the animal kingdom, especially primates (primate infanticide) but including microscopic rotifers, insects, fish, amphibians, birds and mammals. [3]
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 ...
Some rodent species (most typically males) will take the chance to kill neonates that are unrelated to them should opportunity permit. There is thought to be several benefits by doing so, which not only include nutrition benefits (particularly where food is in short supply [8]) but also non-direct benefits, such as allowing access to more resources, improving reproductive opportunities and the ...
A boa constrictor in the U.K. gave birth to 14 babies — without a mate. The process is called parthenogenesis, from the Greek words for “virgin” and “birth.” ... some animals can have ...
Cannibalized offspring can act as a food source for the male fish guarding them. [12] Often, male fish will consume their entire clutch if it is too small, as the energetic costs of caring for a small clutch may be greater than the reproductive benefits. [11] In other fish, filial cannibalism has been observed to regulate male fish's endocrine ...
Scientists hypothesize that this is because many cheetah litters have cubs from different fathers and males would not want to kill any cubs in case they killed their own. [13] The promiscuity of female cheetahs helps to protect the threatened species not only by preventing infanticide but also by bringing greater genetic diversity. [ 15 ]
The animals can dive below the ocean’s surface, reaching depths of more than 2,952 feet. Some of their dives can last for more than an hour and a half before they need to come up for air.
The researchers also looked at death records and, after adjusting for factors like alcohol use, smoking, body mass and sleep duration, found that night people had a 9% greater risk of early death ...