A tourist asked curiously, "I heard that only the leader of the wolf pack has the right to mate and can breed offspring?"

Fang Ye shook his head and said, "what alpha wolves rule the wolves, give priority to prey and have the right to mate? These rumors have been overturned by the field observation of wolves. In fact, as long as there is enough food, the female wolves in the wolf pack will give birth to cubs, and the wolf pack will raise them together.

Several female wolves are pregnant and give birth to cubs. When the wolves go out to hunt, the cubs will be concentrated in a cave and taken care of by a female wolf as a nanny. This saves wolf power resources and allows more wolves to devote themselves to hunting. "

Our other female wolf, Chinese cabbage, was isolated because she was not in the breeding plan. She would not release it until the estrus period was over. "

"Well, why should we separate?" Immediately, a tourist puzzled.

I ran into the problem of the lion hall last time.

Fang ye thought for a moment and said, "emotionally, I also hope to make no restrictions and let them live freely, but from a rational point of view, of course, it is necessary to control their reproduction.

In zoos, animals don''t have the pressure to survive in the wild. They don''t have to spend time looking for food. The so-called warm thinking * *, naturally, they will have more leisure to mate. There are no natural enemies to hunt. If you are sick, you will get treatment. If you don''t control it, the number will increase all the time.

If animals are allowed to breed at will without restrictions, beyond the bearing capacity of the zoo, there will be insufficient living space, food shortage, lions and tigers jealous of hunger, a surge in bloody fights, possible increase in attacks on breeders, too much feces to be handled in time, stinking air in the park, increased risk of animal diseases, and too busy and negligent breeders, Animals find opportunities to flee, and all kinds of situations lead to terrible consequences.

Generally, there are several different measures to control the number of animals, such as separating the male and female animals, contraception and euthanasia, which have their own advantages and disadvantages.

Some zoos euthanize 20 to 30 healthy animals every year to simulate the real survival of animals in the wild.

Euthanasia of animal cubs born in isolation without contraception generally allows animal parents to have the experience of breeding and raising the next generation after they mature.

Isolation sounds better than contraception and euthanasia. In fact, it is not. The advantage of contraception is that there is no need to separate female animals from males in order to prevent them from becoming pregnant. For example, cabbage can''t move in the open field, but can only stay in the cage.

Moreover, the hormones in contraceptives can reduce the aggressiveness of males in competing for females. Sometimes males compete fiercely with females and often fight and get hurt. If we come here and see them fight every time, will we be upset.

However, contraceptives will have side effects on animals. For example, large cats and dogs injected with hormones are prone to uterine infection and tumor, which is a health risk.

These measures are also to ensure the genetic diversity of animals and prevent them from inbreeding. Genetic diversity is very important for the long-term survival of species, so that future generations can have a series of abilities necessary for their survival in the wild.

The final result of breeding management in this way is to avoid all kinds of hazards caused by animal surplus and ensure that animals can always have the right to breed and raise the next generation. "

This topic is bound to be morally controversial.

At this time, several tourists frowned and looked distressed. It was obvious that they were still tangled. There were many disadvantages in either method, especially euthanasia, which was cruel. They felt that the zoo was not as beautiful as they thought.

Fang Ye is honest anyway. Whether he likes it or not, he said to let tourists think for themselves.

A tourist mused: "I think if the quality of animal life can not be guaranteed, it is respect for animals to die rather than live.

I saw a video of rescuing stray dogs before. Maybe the venue and funds can only save 100 dogs, but I took in 1000 dogs. Those dogs are hungry and have no companions. Many dogs are infected with diseases. It''s too miserable. If you have love, even if you leave a few to take good care of, it''s better than letting these dogs hang. It''s more painful to live than to die. "

Fang Ye nodded and said, "in fact, this is a positive attitude towards life."

The zoo will carefully evaluate whether to carry out euthanasia when animals are old and frail, have arthritis or other diseases, suffer from pain and can not be cured.

However, euthanasia has great ethical problems.

A tourist couldn''t help asking, "why do people have the right to decide their life and death? Is there anything wrong with the dog? "

Fang Yeping said, "you''re right. Animals are not wrong. No matter what they do, they act according to instinct. Therefore, we people should learn and think more, know how to do it correctly and be responsible for animals.

If we act only by instinct, we are no different from animals. "

"Quack quack ~"

Nearby, tourists clapped.

……

Time flies like a white horse. A month''s time will pass in the blink of an eye!

No big event happened in the zoo this month. The animals played with the snow, ate dry meals, and some were busy breeding offspring every day.

In the calm daily life, we came to January of the new year.

After the construction of the panda hall and communication with the giant panda base, the leased giant pandas came by plane.

The male giant panda is named Zhuang Zhuang, and the other female giant panda is named Yunduo!

At present, they are all 4 years old and still a baby. Pandas don''t become adults until they are 5 and a half years old.

To be exact, it is a sub adult. It was a child a year and a half ago.

Fangye took several employees of the zoo and came to the airport early to make preparations.

The faces of the people were filled with smiles and were very excited.

The blue carp said excitedly, "giant panda, there will be giant pandas in our zoo!"

Fang Ye scratched her palm and said with a smile, "look, you''re happy."

Lin Ying fell into reverie and her saliva was coming out: "Hey, I didn''t expect to have the opportunity to be a veterinarian of the giant panda. During the physical examination, we must touch its hair to see how it feels."

Guan Shan rubbed her hands and her eyes were burning: "everything is ready, only the giant panda!"

As the leader of the Panda House, she also made a lot of preparations to welcome the giant panda.

There are special technical regulations for the breeding of giant pandas. The feed table is extremely complex. Of course, fresh bamboo is the staple food. In addition to bamboo, there are bamboo shoots, apples, eggs, carrots and expanded materials.

The food is ready for the giant panda.

The place where giant pandas are isolated and quarantined is directly in the back room of the giant panda museum, with special treatment.

Usually their health conditions are carefully tested, and they do not come back or go abroad, so the quarantine time can be shorter. Depending on the adaptation, they can be displayed in 7 days at the fastest.