Search results
Results From The WOW.Com Content Network
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]
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 ...
Some breeds have been developed to emphasize certain physical traits beyond the point at which they can safely bear litters on their own. [ citation needed ] A large scale study in Norway showed that across all breeds, about 4% of pups will be stillborn and a further 4% will die within the first week (early neonatal mortality).
Get a daily dose of cute photos of animals like cats, dogs, and more along with animal related news stories for your daily life from AOL.
“Mother bears have emerged from their den with their cubs, 1-year-old bears are leaving their family group and roaming to find a new home, and, with breeding season just around the corner, male ...
A female polar bear "died from a broken heart" at SeaWorld San Diego on Tuesday, just months after her best friend of 20 years was transferred to another zoo, according to People for the Ethical ...
This is a list of animals that have a naturally occurring hump or humps as a part of their anatomy. Humps may evolve, as a store of fat, as a heat control mechanism, as a development of muscular strength, as a form of display to other animals, or be apparent as a consequence of some behaviour such as the diving of whales. Enlarged humps have ...
Some reptiles, such as the sand lizard of Europe, have eyespots; in the sand lizard's case, there is a row of spots along the back, and a row on each side. [12]Many species of cat, including Geoffroy's cats, jungle cats, pampas cats, and servals, have white markings, whether spots or bars, on the backs of their ears; it is possible that these signal "follow me" to the young of the species.