A video released by the Chengdu Research Base of Giant Panda Breeding sparked heated discussions among netizens. The giant panda "He Ye" is actually the "sister". The giant panda "He Ye" and the giant panda "He Hua" are "sisters" who love each other.

大Why did the panda "He Ye" change from "brother" to "sister"? In the video, Grandpa Tan said that when "Heye" was born, his gender characteristics were biased towards "younger brother". After raising it for several months, including its characteristics such as high urination, lively personality, and tall height, it was determined that it was a "younger brother", and the dads no longer doubted its gender. However, as Heye grows up, his distinctive male characteristics become less apparent. The dads asked experts to collect biological samples from "He Ye", and the results showed that it was indeed the "sister".

Netizen "@海波" said, "When I woke up, it was snowing heavily in Chengdu, and "Hua Ye" turned into sisters. I couldn't accept it for a while, so I took it easy."

Netizen "@路MAN" said, "I can't accept it. Such a handsome little brother has turned into a sister."

Netizen "@叶草" said: "A handsome little boy has turned into a little girl." , this sister is so handsome.”

Why is it difficult to tell the gender of giant pandas? There is currently a saying that the giant panda baby is a premature baby. When the mother gave birth to it, its own development was not complete. For example, the ears and eyes only had a few small bumps when they were born. Their genitals are not fully developed, especially for male giant pandas. It takes 3 to 4 years for the testicles to sink into the scrotum, and even then, their reproductive organs are not very obvious.

For Giant panda researchers can determine the gender of a giant panda based on experience by observing or touching its genitals when the baby is born, but the accuracy of this method is very low. The most scientific way is to identify males and females through genitalia during a physical examination, and a more rigorous approach is through DNA identification.

As for the difficulty in distinguishing the sexes of giant pandas, there are also claims that this is the result of the degeneration of the giant panda race. No matter what the answer is, the mysteries left by giant pandas to humans still need to be slowly solved while protecting them.