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It has been hypothesized that the cause of this "quiescent" state is the male's massaging of the female's abdomen, following male vibratory signals on the web. The female enters a passive state, and the male's risk of facing cannibalism is reduced. This state is most likely induced as a result of a male volatile pheromone. [43]
Gerbils, on the other hand, no longer commit infanticide once they have paired with a female, but actively kill and eat other offspring when young. The females of this species behave much like male mice, hunting down other litters except when rearing their own.
Male waterfowl have developed another modification; while most male birds have no external genitalia, male waterfowl (Aves: Anatidae) have a phallus (length 1.5–4.0 centimetres [0.59–1.57 in]). Most birds mate with the males balancing on top of the females and touching cloacas in a “cloacal kiss”; this makes forceful insemination very ...
The parallel of castration for female animals is spaying. Castration may also refer medically to oophorectomy in female humans and animals. The term castration may also be sometimes used to refer to emasculation where both the testicles and the penis are removed together. In some cultures, and in some translations, no distinction is made ...
You don't mess with a man's best friend.
That is where Targan, a Raleigh startup founded in 2015, believes its gender identification processor can help. Traditional chicken sexing is done by hand, which carries time and labor limitations.
Male chicks on a macerator conveyor belt, seconds before they are killed Chicks ground by a macerator. Chick culling or unwanted chick killing is the process of separating and killing unwanted (male and unhealthy female) chicks for which the intensive animal farming industry has no use.
TEN MINUTES BEFORE my dog tried to kill me, we went on a peaceful walk. Rollie, a nine-year-old, 80-pound pit-bull mix with coconut-white fur and a ginger spot on his left eye, strolled calmly by ...