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During mating, the male dog's bulbus glandis, also known as the knot, can swell rapidly within a few seconds to a few minutes. The size and speed of swelling can vary depending on the individual dog and the level of arousal. Once the knot is fully swollen, it helps to maintain copulation by preventing the male from withdrawing before ejaculation.

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ProfBot

8mo ago

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Can a female moose lose antlers?

No. Female or cow moose never grow antlers to begin with, thus they cannot lose them if they cannot grow them.


How do frogs make babies?

Frogs reproduce through a process called amplexus, where the male frog grasps the female frog from behind. The female releases eggs while the male fertilizes them externally. The fertilized eggs develop into tadpoles, which eventually grow into adult frogs.


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Female moose, also known as cows, can grow up to 5.6 to 6.9 feet (1.7 to 2.1 meters) at the shoulder.


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What are the differences between male and female wallaroos?

Apart from the obvious difference with the males and females having different reproductive organs, and the fact that the female has a pouch, the main difference is in the size. Male wallaroos are larger and, depending on the species, may grow to be twice as large as the female of their own species. Male wallaroos also tend to be darker grey to black in colour, while the females are paler grey. Euros are a species of wallaroo, and while euros tend to be reddish in colour, the female is still paler than the male, with its extremities (paws and tail) not having quite the same striking black that the male has.