The female bear also looked at

A new study finds that ancient bears do not often do "that", but each of their "love" lasts for a long time. Female bears are also said to choose partners based on penis size.

Spanish scientists learned about the sexual life of ancient bears after finding the fossil bones (penis os or baculum ) fossils. They analyzed this baculum collection of an extinct bear named Indarctos arctoides , who lived on Spanish soil 12 million years ago.

Bear Indarctos arctoides was born throughout Europe 12 million years ago but is now extinct.(Photo: Corbis)

The team discovered that the ancient bones of these ancient creatures were surprisingly large. This led experts to say that Indarctos arctoides do not mate often, but each of their "love" lasts.

Researcher Juan Abella from the University of Barcelona believes that female bears may have used the 'little boy' size of male individuals as a criteria for selecting partners.

NBC news agency quoted scientists as saying that each male bear Indarctos arctoides has a weight of 265.74 kg, equivalent to the size of a European brown bear today. However, unlike the modern bear, this ancient bear's penis is about 233.6mm long, 'more massive' than the penis of larger bears of the same time. Meanwhile, a modern polar bear, weighing about 500kg, only owns an average of 186.5mm long penis.

The researchers said that the length of the penile bone revealed the sexual behavior of Indarctos arctoides as well as details of the habit of the bear. For example, male bears seem to have time to 'abstain from it' for quite a long time, but long penis bones may have helped them keep their birth canal in the best available posture. fertilization.

Table comparing fossil penis size of different ancient bears, in which the penis of Indarctos arctoides is the longest.(Photo: Plos One)

The bear Indarctos arctoides may also have to move for kilometers and does not encounter other species of the same species, making them less likely to find a mate.

Fossil evidence for Indarctos arctoides also implies that male bears are significantly larger than female bears.

These new findings disprove the results of previous studies that male bears are higher than female bears, but tend to have shorter penile bones and have to compete fiercely to win partners.