Why do cows eat grass and tigers eat meat? Please, 3Q

Why do rabbits eat grass and tigers eat meat? Why do green worms eat vegetables instead of narrow-leaved grass? The tiger dies, the microbes eat it, the microbes are absorbed by the grass, the grass is eaten by the rabbits, and the rabbits eat the tigers?

Bugs eat vegetables, seagulls eat fish. If you don't let the insects eat the vegetables, and if you don't let the seagulls eat the fish, you will all die. Why do people kill bugs?

The vegetable was originally a grass, and the bugs ate it all the time, and now you don't let it eat it, what if it's hungry? Why do schools put children of the same age in the same classroom, teach the same materials, and take the same pace? Ask the children to hold their hands behind their backs, ask the children to sit up straight, ask the children to be quiet, and ask the children to raise their hands if they ask questions.

Why is that? Obviously, there are children who can't understand, and teachers won't slow down for him, and there are teaching materials, and teachers understand everything, but there are still so many teaching staff in the office, why? In the chicken farm, chickens of the same age are put in the same cage, they can't move except for their heads can move up and down to peck rice, feed them the same feed, let them lay eggs early, why?

The grass must be removed from the field, and various chemical fertilizers must be applied, and various pesticides must be sprayed from time to time, why? Railways connect all over the world, and big carts and small cars drag exhaust fumes to fly, why? How much electricity can be saved in the world by using 1 hour less air conditioning every summer?

Why won't the air conditioner go off? Staying up less than one hour a day can save a lot of electricity and be more conducive to health, but the number of people who stay up late has not decreased, why? People blindly chase after efficiency and can't see nature as it is.

Why do people use abnormal means to kill those poor creatures by taking it for granted that it is normal? All beings are equal, so why do rats become pests? Genetically modified food is harmful to health, why is it still being produced?

Desire, aroused by efficiency, can never be filled. The desire to fill in the level brings confusion and pain. Why do people live?

Many people say it's for the pursuit of happiness. Living better is also about the pursuit of happiness. What happiness is is nothing but the temporary fulfillment of desires.

Those who have no desires, those who are content, are always happy. Those who fight bravely in a desireless world, walking in the footsteps of their predecessors, are ignorant and fearless, dominated by material things and do not know their own pitiness. How can people live like this?

Material and spiritual, to be pursued together.

It's the same as why you eat both plants and animals. For thousands of years, all animals have evolved to find their own way of survival, and cattle and tigers have different ways of living and their position in the food chain, which has led to different diets for them.

It is thought that cows are born to eat grass and tigers eat meat.

Cows are mammals, and tigers are carnivores.

Tigers sometimes eat grass because they want to help with digestion.

It usually preys on large mammals, including various wild deer, wild sheep, bison, wild boar, red deer, sambar deer, roe deer, musk deer, muntjac and other ungulates, and occasionally preys on wild fowl, berries and large insects in autumn.

The amount of meat eaten is 17 - 22 kg per meal, and the larger ones can reach up to 30 kg per meal, and then do not eat meat for 6 days. Sometimes it also catches all kinds of small animals, such as birds, monkeys, fish, and so on. To aid digestion, they will also nibble on grass occasionally.

It is said that tigers are herbivores, but why do tigers need to eat grass after eating food?

Because tigers in the wild often catch some animals, and when they eat it, they basically eat it with the leash meat, so that there is a large amount of hair in the tiger's stomach, and whenever this time the tiger will eat some grass with long fiber and serrated edges, so that the hair in the stomach will be excreted with the feces. (Domestic cats sometimes have this habit because they eat their own fur).