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Three species of Aspidoscelis. The all-female Whiptail lizard species Aspidoscelis neomexicanus (center), which reproduces via parthenogenesis, is shown flanked by two sexual species having males, A. inornatus (left) and A. tigris (right). Research has shown that simulated mating behavior increases fertility for Aspidoscelis neomexicanus. One ...
List of mammals displaying homosexual behavior. Giraffes in Kenya; giraffes have been called "especially gay " for engaging in male-male sexual behavior more often than male-female ( heterosexual) sex. [ 1][ 2] This is a list of mammals for which there is documented evidence of homosexual behavior. These animals have been observed practicing ...
Homosexual behavior in animals. Two male mallards ( Anas platyrhynchos) Various non-human animal species exhibit behavior that can be interpreted as homosexual or bisexual, often referred to as same-sex sexual behavior (SSSB) by scientists. This may include same-sex sexual activity, courtship, affection, pair bonding, and parenting among same ...
Hermaphrodite. A hermaphrodite ( / hərˈmæfrəˌdaɪt /) is a sexually reproducing organism that produces both male and female gametes. [ 1] Animal species in which individuals are either male or female are gonochoric, which is the opposite of hermaphroditic. [ 2] The individuals of many taxonomic groups of animals, primarily invertebrates ...
List of animal names. Mother sea otter with sleeping pup, Morro Bay, California. In the English language, many animals have different names depending on whether they are male, female, young, domesticated, or in groups. The best-known source of many English words used for collective groupings of animals is The Book of Saint Albans, an essay on ...
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .
Mandrills. Adult male mandrills with alpha status display vivid coloration on their skin, while those with beta status are more dull in colour. Both types of males engage in mating, but only the dominant alpha males have the ability to produce offspring. Male mandrills sometimes fight for breeding rights which results in dominance.
According to Bagemihl, animal sexual behavior takes many different forms, even within the same species and the motivations for and implications of their behaviors have yet to be fully understood. Bagemihl's research shows that homosexual behavior, not necessarily sex , has been documented in about 500 species as of 1999, ranging from primates ...