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The locking is completed by circular muscles just inside the female's vagina; this is called "the knot" tightening thus preventing the male from withdrawing. The circular muscles also contract intermittently, which has the effect of stimulating ejaculation of sperm, followed by prostatic fluid, as well as maintaining the swelling of the penis ...
Moose have a series of rutting events that are similar to those seen in other deer species, however, they have several characteristic behaviors which give them a distinct rut. The first of these behaviors is a challenger gait where the bull moose will sway back and forth and circle the rival bull while dipping his antlers down. [ 31 ]
The reason why some researchers are skeptical about animals having a sense of humor is that it serves no evolutionary purpose. For humans, it's a bonding strategy. For humans, it's a bonding strategy.
Both have a slight hump above the forelegs which occurs by the anatomy of its spinal column and is not a true hump. [3] [4] The hartebeest, a species of African grassland antelope, of which there are eight subspecies, all have a visible hump at the shoulder caused by the anatomy of the spine. The hump is due to the long dorsal processes of the ...
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A dog's glans consists of two sections: Behind the lower, long part (pars longa glandis) lies the "knot" (Bulbus glandis) [1] which expands only after penetrating the vagina and causes the male dog to remain inside the bitch ("Tie") for some time after ejaculation (typically between 15 and 30 min).
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The hemipenis is the intromittent organ of Squamata, [4] which is the second largest order of vertebrates with over 9,000 species distributed around the world. They differ from the intromittent organs of most other amniotes such as mammals, archosaurs and turtles that have a single genital tubercle, as squamates have the paired genitalia remaining separate. [5]