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Find out what's happening in the world as it unfolds. An example of overlooking homosexual behavior is noted by Bagemihl describing mating giraffes where nine out of ten pairings occur between males:. The sexual behavior of non-human animals takes many different forms, even within the same species, though homosexual behavior is best known from social species. Researchers at Rikkyo University in Tokyo found 20 homosexual pairs at 16 major aquariums and zoos in Japan. Columbia News Service.

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Others in the colony of 33 penguins were still flirting.

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Such behavior is often elicited and exaggerated by the researcher during experimentation through the destruction of a portion of brain tissue, or by exposing the animal to high levels of steroid hormones prenatally. Archived from the original on Male homosexual behavior occurs both in the wild and in captivity, and it occurs in both adolescent and mature individuals. Sexual selection Sexual reproduction evolution reproductive system Courtship display sexual ornamentation handicap principle sexy son hypothesis Fisherian runaway Mating systems mate choice mating call mating plug lek mating Copulation cloacal kiss sexual intercourse pseudocopulation Fertilisation internal external sperm competition traumatic insemination penile spines Modes monogamy promiscuity polyandry polygyny polygynandry semelparity and iteroparity opportunistic hermaphroditism cuckoldry seasonal synchrony Sexual dimorphism anisogamy oogamy Bateman's principle bimaturism cannibalism coercion Sexual conflict interlocus intralocus Interspecies breeding Non-reproductive behavior Fisher's principle.

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Male homosexual behavior occurs both in the wild and in captivity, and it occurs in both adolescent and mature individuals.

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