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A notable example of a bird with a pseudo-penis is the red-billed buffalo weaver, which do not use their pseudo-penis for direct insertion during copulation; however it does play a part in successful mating and stimulation. [15] Similarly to the red-billed buffalo weaver, the cassowary, a ratite, exhibits a pseudo-penis in both males and females.
[9]: 164 However, if the definition of "homosexual behavior" is made to include animals that participate in both same-sex and opposite-sex mating activities, hormonal differences have been documented among key sex hormones, such as testosterone and estradiol, when compared to those who participate solely in heterosexual mating. [9]: 164
Young cattle (regardless of sex) are called calves until they are weaned, then weaners until they are a year old in some areas; in other areas, particularly with male beef cattle, they may be known as feeder calves or feeders. After that, they are referred to as yearlings or stirks [4] if between one and two years of age. [5]
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 animals for which there is documented evidence of homosexual behavior.
City of Buffalo, New York American bison, colloquially referred to as buffalo "Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo" is a grammatically correct sentence in English that is often presented as an example of how homonyms and homophones can be used to create complicated linguistic constructs through lexical ambiguity.
Sexual mimicry occurs when one sex mimics the opposite sex in its behavior, appearance, or chemical signalling.. It is more commonly seen within invertebrate species, although sexual mimicry is also seen among vertebrates such as spotted hyenas.
Mar. 7—The state Senate will now consider a House bill calling for a constitutional amendment to repeal the Legislature's authority to limit marriage to opposite-sex couples. The state Senate ...
Sexual dimorphism was also described in the gene level and shown to extend from the sex chromosomes. Overall, about 6500 genes have been found to have sex-differential expression in at least one tissue. Many of these genes are not directly associated with reproduction, but rather linked to more general biological features.