Do dogs dream? Detailed answer

BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

Do dogs dream? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Did you know?

Do dogs dream?

If you have a dog in the house, you probably noticed that sometimes in a dream he makes some sounds, twitches or jerks his paws, as if chasing someone. Most dog owners who notice this think it is a sign that their dog is dreaming. While these people can't say with certainty that their dogs dream, scientists are likely to say that dogs probably don't dream after all.

To understand this theory of scientists, we must remember that both man and animals became what they are as a result of evolution. This means that over the course of millions of years we have gradually undergone changes. Although man and animals are similar in many ways, the mind and senses of animals have evolved in a slightly different direction from humans. And as a result, animals also live in a different world from ours.

Since the senses and thought processes of animals are different from ours, we cannot say that their sense organs and brain produce products similar to those provided by our sense organs and brain.

The intelligence and personal qualities of animals are not a "reduced model" of humans. We cannot know how the mental activity of animals takes place. And if we, seeing that the dog jerks its paws and whines in a dream, we believe that they are dreaming, we have no way to prove that we are right. Maybe the brain cells just continue to send signals to the muscles, and the dog does not have any dreams at this moment. Animals with a brain structure similar to ours may have thoughts and images similar to ours, but they are, of course, much more primitive.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

How do frogs croak?

If you have ever lived near a pond, you must have often been surprised by frog concerts. The sounds they make at night are loud enough to keep you awake! Female frogs can make some sounds if they are injured in any way, and the well-known croaking that we hear at night is made only by males. The main purpose of these guttural songs is to attract the attention of females. But they don't limit their croaking to just the mating season. Their voices can be heard long after the end of this period.

How does a frog make croaking sounds? She (or rather, he) inhales air, closes her nostrils and mouth and drives the air back and forth between her mouth and lungs. This sound is made when air passes through the vocal cords and causes them to tremble. Many species of frogs have sac-like resonators that are connected to the mouth. When the frog starts its song, the resonators fill with air and swell. These swelling pouches are what give the croak its distinctive sound.

Speaking of which, the voice of the American bullfrog sometimes travels a mile or more! Although the adult frog has lungs, it breathes with them in a completely different way than we do. She draws air into her mouth through her nostrils while lowering her throat. The nostrils then close and the frog raises its throat again, thus pushing the air further into the lungs.

Did you know that a frog uses its eyes when swallowing food? As you know, frogs catch their prey with a sticky tongue. When an insect sticks to the tongue, they pull it into their mouth. The frog's large, bulging eyes are separated from the oral cavity only by thin skin. When they close, they protrude inward. That is, the frog closes its eyes when an insect enters its mouth, and the internal bulges help push the food down the throat! Frogs are very useful to humans because they eat insects and reduce their number.

Test your knowledge! Did you know...

▪ What is meningitis?

▪ What is bel canto?

▪ What animal told runners to start from a low start?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Vaccination with gold particles 10.07.2013

Scientists in the US have developed a new vaccination method in which tiny particles of gold mimic the virus and carry specific proteins to the body's immune cells. This is a fundamentally new approach to vaccination, here, unlike most modern vaccines, dead or weakened viruses are not used.

A new vaccination method using a specific protein that resides on the surface of respiratory syncytial virus (RSV) has been demonstrated in a laboratory at Vanderbilt University. The RSV virus was not chosen by chance - it is the cause of lower respiratory infections in people of all ages. But children and the elderly are especially vulnerable. To date, there has been no vaccine for this infection. Although respiratory syncytial virus has a mild appearance in many people and does not differ from most seasonal viral diseases, it is insidious and can cause complications and death.

The F protein, which is part of the RSV virus, is the main cause of the development of the disease: it allows the virus to penetrate into the cytoplasm of the cell. It also causes the cells to stick together and thus makes it difficult to eliminate the virus. Until now, scientists have not been able to find a vaccine for this disease. But if the experiments with gold particles are successful, then the body will receive reliable protection. It will consist of the following. Gold particles, imitating the virus itself, will "record" information about the F protein in our body, and the next time we meet it, our immune system will immediately begin to respond.

In a pilot demonstration, the scientists connected 21 and 57 nanometer gold nanorods (almost the same size as a virus) and coated them with the F protein. The researchers then tested the ability of the gold nanorods to deliver the F protein to specific immune cells known as dendritic cells. Dendritic cells usually "collect" information about the virus (in this case, the F-protein) and pass it on to the immune system - so that our body, more precisely T-cells, can fight off the invader. Experience has shown that gold nanoparticles coated with F-protein are the most effective as a vaccine. When nanoparticles are delivered to dendritic cells, the protective cells of our body multiply much more actively, compared with those parts of the experiment when only gold nanoparticles or only F-protein were added to dendritic cells.

Thus, gold nanoparticles successfully imitate the virus and force our body to "remember" the protein for subsequent destruction. In addition, gold is not toxic to our cells, it does not cause immune cells to become active.

Researchers say it's critical to finally get an effective vaccine against respiratory syncytial virus, which causes most pneumonia in young children. At the same time, the developers of the new vaccination method do not rule out that gold nanoparticles can be used to make vaccines against other viruses. Nanoparticles are a kind of platform on which any viruses or large microorganisms, such as bacteria and fungi, can be planted. But that's in the future. In the near future, scientists intend to start testing a vaccine against RSV-virus in vivo. If the testing is successful, then you can forget about the drugs and not be afraid of complications.

Other interesting news:

▪ Bicycle anti-theft system

▪ Dry cleaning of birds

▪ Rocstor Amphibious external drive protects data with encryption

▪ A chair with a cardiograph will prevent the driver from falling asleep at the wheel

▪ Viruses are more dangerous for men than for women

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Spy stuff. Article selection

▪ article Healthy lifestyle and its components. Basics of safe life

▪ article What is the feature of behavior when choosing from several alternatives that people and frogs have in common? Detailed answer

▪ article Medical laboratory assistant of the clinical diagnostic laboratory. Job description

▪ article Universal lighting control scheme with several switches. Encyclopedia of radio electronics and electrical engineering

▪ article Electrical installations in fire hazardous areas. Electric cars. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews