Why animals are the friends of man

Anyone who can be used by it in human society is called a friend! Take the pig as a good friend of mankind! Because he's full of treasures!

It can be fully used by people! It's the same with dogs, and it shows people for a lifetime, and it turns into dog broth! The hen lays eggs for a lifetime, and in the end it becomes KFC's McSpicy Chicken Wings!

The cow milked out all its life and finally went to McDonald's and turned into a beef burger!

Dogs, cows, dragonflies, frogs, swallows, sparrows, dolphins, pandas, camels, woodpeckers, etc.

Some scientists believe that dogs were domesticated from gray wolves by early humans, and the domestication time was 40,000 years ago, and it has developed to this day. Dogs are known as "man's most loyal friend" and are now the most popular pets. Its lifespan is about more than ten years.

And in Chinese culture, the dog belongs to one of the 12 zodiac signs, the 11th place in the 12 zodiac signs. Some myths also refer to cows as the origin of the world or of humanity, such as in Norse mythology, where Ymir, the ancestor of the frost giants, was raised by a cow named Odembula.

Puppies, cows, dragonflies.

Animals such as frogs and swallows are friends of humans.

1. Dogs. Dogs are known as "man's most loyal friend" and are now the most popular pets. Its lifespan is about more than ten years. Some scientists believe that dogs were made by early humans from gray wolves.

Domesticated, domesticated 40,000 years ago, developed to this day.

2. Cattle. Cattle in Chinese culture.

It is a symbol of hard work. In ancient times, there was an application of using oxen to pull ploughs to prepare the land, and later people knew that oxen had great strength, and began to have a variety of different applications, from farming, transportation and even military to widely used.

3. Dragonflies. As a common insect, dragonflies are often used as indicator organisms for water weight metal pollution because their larvae are aquatic and have enrichment in mercury and cadmium, and the content of heavy metals in their bodies increases with the increase of water weight metal content.

4. Frogs. A frog can hunt up to 70 bugs a day.

It can eliminate 15,000 pests a year. Therefore, the frog is an animal that is beneficial for agriculture.

5. Swallows. Swallows spend a lot of time catching pests in the air and are one of the most flexible passerine species, mainly feeding on mosquitoes, flies and other insects, and are well-known beneficial birds.

Frogs, swallows, bees, ladybugs, geese, tortoises, rabbits, snakes, squirrels, dragonflies, butterflies, etc.

1. Swallows: When the autumn wind is bleak and the leaves are scattered, the swallows fly south in flocks, and when the flowers bloom and the willow branches sprout in the spring of the next year, they fly back to the place where they lived.

2. Frogs: In spring, frogs lay spinal eggs on aquatic plants, and the eggs slowly turn into tadpoles. Tadpoles are black, round with a round body and a long tail, the tadpole grows day by day, first growing hind legs, then front legs, the tail gradually shortens and degenerates, and finally becomes a frog.

3. Turtles: The temperature in spring and autumn is low, and turtles are not active in the morning and evening, and only feed around noon.

They are known as resource insects. From spring to late autumn, bees are busy every day during the flowering season. Winter is the only short period of rest for bees.

5. Rabbits: Generally, rabbits raised at home should pay attention to the provision of food, because young rabbits do not feel full. Vegetables are not recommended for young rabbits, which are prone to enteritis and can only be provided appropriately when they become adults.

Rabbits are divided into young rabbits and adult rabbits. They are all fed in the morning and evening, 2 times a day. If you encounter the situation of changing the orange for the Fan Yin Tuan brand food, it needs to be transitioned and cannot be replaced directly, resulting in the rabbit not adapting and uncomfortable.

6. Wild geese: Wild geese are excellent air travelers. In autumn and winter, they fly from their home Siberia in flocks to the south of our country to spend the winter.

The following spring, they return to Siberia after a long journey to lay eggs for breeding. The wild geese fly very fast, they can fly 68 90 kilometers per hour, and the long journey of several thousand kilometers has to fly for a month or two.

Examples include sharks and guide fish, rhinos and rhino birds, crocodiles and hodors, hermit crabs and anemones.

Mutually beneficial symbiotic animals, such as rhinos and rhino birds.

Animal. What other friends does the world have?

Rhino and rhino birds, sharks and guide fish.

It's time to break the OK road routine.

Rhino and rhino birds, crocodile and toothpick birds, sharks and guide fish, hermit crabs and anemones.