Why do people cry when they are sad Aren t animals sad

Animals are sad, it's just in a different way! I've seen a monkey mother holding her son who died for 1 month! His son is rotten, and he can't even throw it away! And his own eyes were infected! Do you say he's sad? He knows what's going on!

People weep and weep when they are happy and sorrowful. So, do animals that we think also have mood changes cry out? In fact, if you look closely, you can see that tears can also flow from the animal's eyes – provided that it has a tear sac tissue.

But in fact, that is not the same thing as the so-called crying of Qi Songhong. For example, cows and horses, if the lacrimal sac is moistened by ** or the eyes need moisture, they will shed tears, but these tears are not out of sadness or extreme joy, so it is unscientific to understand the cry of animals only from tears. But animals do grieve and cry, and we can understand their wails when they lose their cubs and call for their lost mates as their crying.

Most living beings, including plants, have feelings and emotions, but they express them differently from us. "

Summary. The lacrimal gland can secrete tears, while invertebrates are lacrimal glandless, even cephalochordates, caudal chordates, and vertebrates begin to appear lacrimal glands from the amphibians, so amphibians, reptiles, birds and mammals have tears.

Invertebrates (invertebrates) are animals that do not have a vertebral column on the dorsal side, and they are the primitive form of animals. Its species account for 95% of the total number of animal species. It is distributed all over the world, and there are about 100 million species in existence.

Including protozoa, echinoderms, molluscs, flattened animals, annelids, coelenterates, arthropods, nematozoa, etc.

A sub-discipline of zoology. In animal classification, animals are divided into two categories: vertebrates and invertebrates according to whether they have vertebrae in their bodies.

The science that studies the classification, morphology, physiological characteristics, geographical distribution, reproduction, evolution, etc. of invertebrates is called invertebrate zoology. Invertebrate zoology includes: protozoology, helminthology, entomology, molluscs, crustaceans, etc.

Invertebrates refer to relatively lower groups of animals that do not have vertebrae. Corresponds to vertebrates. Both the variety and the number are huge.

From the perspective of living environment, oceans, rivers, lakes, ponds, and land.

What animals don't shed tears.

The lacrimal gland can secrete tears, while the traceless dust vertebrates are lacrimal glandless, even cephalochordates, caudal chordates, and vertebrates also begin to appear lacrimal glands from the amphibians, so amphibians, reptiles, birds and mammals have tears. Invertebrates (invertebrates) are animals that do not have a vertebral column on the dorsal side, and they are the primitive form of animals. Its species account for 95% of the total number of animal species.

It is distributed all over the world, and there are about 100 million species in existence. Including protozoa, echinoderms, molluscs, flattened animals, annelids, coelenterates, arthropods, nematozoa, etc. A sub-discipline of zoology.

In animal classification, animals are divided into two categories: vertebrates and invertebrates according to whether they have vertebrae in their bodies. The science that studies the classification, morphology, physiological characteristics, geographical distribution, reproduction, evolution, etc. of invertebrates is called invertebrate zoology. Invertebrate zoology includes:

Protozoology, helminthology, entomology, molluscs, crustaceans, etc. Invertebrates refer to relatively lower groups of animals that do not have vertebrae. Corresponds to vertebrates.

Both the variety and the number are huge. From the perspective of life around the airclave, the ocean, rivers, lakes, ponds, and land.

There are traces of them; From the perspective of lifestyle, there are types of free life, parasitic life, auspicious and pure life, and symbiotic life. From the point of view of the way of reproducing offspring, some species can reproduce asexually, some species can reproduce sexually, the species with Yanyan can reproduce both asexual and sexually, and some species can also reproduce juveniles and parthenogenesis.

I hope it can help you, and I hope you can give me a thumbs up! Have a great day! Good luck!

Seals, dogs, pigs, sheep, horses, chickens, ducks, donkeys, buffalo zhi, Yangtze dolphins, etc.

Reptiles, birds, and mammals will shed tears, while animals below amphibians will not shed tears. In addition, turtles and crocodiles do not have sweat glands, so they need to sweat through their eyes, and they look like tears.

A lot of animals shed tears, dogs, horses, camels, and so on, and so do monkeys.

Sea turtles, because of the high salt content of sea water, sea turtles reduce the salt in their bodies through tears.

Cattle? Russia has always heard others say that cow tears and cow tears, but it is a pity that Russia itself has never seen it. Hey

Needless to say, the role of tears is similar to that of human tears, which is sterilization and moisturizing, and it is said that tears also contain some special ingredients, which are produced when human beings are sad or angry to produce tears, and then these components can be eliminated through tears, so as to alleviate the effect of these negative feelings of human beings.

Tears can be used as a channel to express feelings to a certain extent. Even if an animal is regarded as inferior to humans, it has its own feelings and a certain emotional world, so I think that animal tears are not only physiological reasons (as above), but also to express their feelings, such as a horse being abused by its owner and crying, but it does not have a language that humans can understand. This is not uncommon, especially in elephants, which are more intelligent animals with more feelings, and when they see their companions die, they will cry and express their grief in addition to priestly activities that humans have not yet been able to explain.

Not exactly. Like crocodiles, turtles, etc., they remove impurities from the body through tears. Tears are also very good for the body.