In fact, Xiao Zhang only briefly introduced science to tourists. After all, this is the Wolf Museum, which mainly introduces wolves. The reason for the decline in the number of Canadian red deer in Yellowstone Park is more complicated than this.

That's right, the deer in Yellowstone Park are not elk but elk. This is a historical issue. I didn't know who confused elk and moose when they translated it for the first time. As a result, the following dictionaries were translated as falsehoods. It's wrong, including the more authoritative "Ciyuan" and "Dictionary of Zoology", which were corrected in some scientific journals at the end of the 20th century, but there are still many called elk.

One of the reasons for the decline in the number of red deer is the decline in the pregnancy rate of red deer. At first, people thought it was caused by the fright of wolves. Later research found that this has little to do with wolves. It is mainly due to the severe drought caused by climate change. The amount of grass, the staple food of deer, has decreased, and the female deer has been malnourished, so the pregnancy rate has dropped a lot.

Another reason for the decline in the number of red deer is the increase in the mortality rate of fawns. 70% of the fawns die in the first year of life. Biologists tracked the fawns and found that only a small part was killed by gray wolves, and most of them were killed by gray wolves. Killed by bears.

In the past, the grizzly bears in Yellowstone Park rarely killed red deer. Their favorite food was cutthroat trout in the river. However, in the 1980s, as fishermen stocked lake trout in the lake, an invasive species wiped out native species. A common tragedy, the lake trout kills the cutthroat trout.

Unlike cutthroat trout, lake trout live in deep water, where grizzly bears can't catch food, so they can only turn to deer.

Whether it is the unusually frequent extreme weather in recent years or the invasion of alien species, it is actually inseparable from human activities.

Therefore, the ecosystem is very complex, and it is easy to destroy, but once it is destroyed, it is difficult to restore, and it can never be restored to the way it was before.

After listening to Xiao Zhang's story, a father showed a thoughtful look: "I used to have prejudice against wolves, but I wanted to tell my daughter the story of Little Red Riding Hood and the Big Bad Wolf, but I think it's better to tell her the story of Yellowstone Park and the wolf. , talk about the role of wolves in the ecological environment!"

The old man sighed: "Ah, so not only dogs are good friends of mankind, but wolves are also good friends of mankind!"

Xiao Zhang smiled and praised: "You are right, sir, in fact, animals are all friends of our human beings."

A tourist murmured: "Are flies, mice and mosquitoes also friends? Anyway, if I see them, I will definitely hit them."

Suddenly someone burst out laughing.

Although these words are suspected of raising the bar, Xiao Zhang thought about it and explained it very seriously: "These animals are really annoying to humans, and I see a mosquito kill one every day.

However, animals such as mice and cockroaches will breed more bacteria and diseases if they do not deal with rotting food and carcasses, and mice are also food for other animals such as owls, wolves, and foxes, so they are also necessary in the ecosystem. indispensable. "

The tourists saw a rare scene of wolves eating meat, deepened their understanding of wolves, and learned so much knowledge. They thanked Xiao Zhang for his explanation and left with satisfaction.

Zhuang Xiaobai came in backwards, and there is still a lot of content to read.

Visiting all the way, I was addicted to sucking wolves and couldn't extricate myself. After a circle, I came out of the cave in front of me. I glanced at the time and was surprised to find that it was 11 o'clock!

I wandered around for an hour in the Wolf Pavilion unknowingly.

When it was almost time for lunch, he was going to go to the tiger pavilion to have a look, and then go to have a meal after reading it.

Looking forward to it, I wonder what surprises the most respected tiger pavilion in the Raiders can bring him?

Tiger Pavilion, Fang Ye is also here at this time!

He came over with a watermelon, smiled and beckoned to the two tigers on the edge of the pool, "Jiaojiao, sorbet! I'm here to see you!"

Some unidentified tourists saw a person in the exhibition area and exclaimed: "Damn, what's the situation, why did someone run in?"

At this time, a tourist who knew the situation took the initiative to explain: "It's okay, this is the director of Fang Yuan! It is known as the big Druid of the city, and it is common for people to slap a tiger or something."

"Brother, is it true or false?"

In front of the glass curtain wall, the breeder Xiaobao explained to the tourists: "Well, don't panic, this person is our director! Our director is respected and loved by all the animals in the zoo, including tigers.

Remind everyone, please do not imitate dangerous behaviors. Tigers will not have such a good temper with strangers. Even those of us who usually feed tigers do not dare to touch without protection without the company of the head of the park. "

Although Zhuang Xiaobai had heard about the existence of such a god in Linhai Zoo before, he was still incredulous when he saw it: "It's amazing how people can get along with tigers so closely."

Then he noticed a watermelon in Fang Ye's arm, a little strange: "Is this going to feed watermelons to tigers? Tigers aren't vegetarian, right?"

Jiaojiao was taking a tiger's stride at this time, walking leisurely on the edge of the water pool, in a good mood, while Sorbet was lying on the grass and sleeping soundly, shaking her ears but no response.

Finding Fang Ye coming, Jiaojiao glanced at the sleeping sorbet, lowered her head and bit its neck, took the sorbet in her mouth and brought it to him, her big amber eyes looked at him meekly, as if The same as showing merit: "Look, I took the child well!"

Sorbet was originally asleep, but was hanged in the air by his neck, and his eyes were half-open, and he kicked jio a little, his eyes were full of doubts and unhappiness: "What's wrong? What happened?"

The tourists rejoiced: "Hey, this little tiger is full of joy!"

"Little tiger said, Mom, it's shameful for you to hold me like this!"

"Children are willing to take them with them. This is because they are very trustworthy. It can be seen that the relationship between the principal and the tiger is really good!"

Jiaojiao put the sorbet on the ground. The sorbet was held for a short time, and she stood firm after shaking her body.

Seeing his favorite Fang Ye, he immediately forgot the unpleasantness just now, "Wow ah ah ah" happily, saying hello to Dad, pounced over and naughty hugged his slippers and bit them.

Fang Ye patted Jiaojiao's big head, rubbed it, and said in a soft tone, "Hey, good girl, it's hard for you to take care of the child. But you don't need to bring the sorbet, I'll just walk over."

She couldn't help but want to hug Jiaojiao's neck with both hands and give it a good rub, but she was holding a watermelon in her hand and could only touch it with one hand.

I brought watermelon today, it is indeed for the tiger to eat!

In fact, tigers not only eat meat, but also vegetarian, and will eat some fruits and berries.

Although cats have a weak ability to absorb plants, they can obtain vitamins and minerals from plants that are not found in meat, and vegetarianism is not to satisfy hunger.

Another is that when a tiger in the wild eats, it basically swallows it with the flesh. In addition, the tongue is often used to clean up the fur. The accumulation of these hairs in the tiger's body is not conducive to digestion. At this time, the tiger will eat it. Point grass, use indigestible grass to help adhere to indigestible hair and bones, forming a hair mass and expelling.

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