What are the characteristics of animals? What are the characteristics and characteristics of animals

Interesting characteristics of animals are: strong sense of smell, fast running speed, strong adaptability, low temperature tolerance, and ability to discharge. 1. The olfactory sensitivity of dogs with strong olfactory ability ranks first among all animals, and the dog's sensitive sense of smell is mainly manifested in two aspects:

One is the sensitivity to odors; The second is the ability to distinguish smells. Sensitivity can vary depending on the type of smell, with dogs being 1 million or even 10 million times more able to detect scents than humans and more than 1,000 times more able to distinguish scents.

2. Fast running speedCheetah is the fastest animal in the world to run on land, and can reach a speed of 115 kilometers per hour. But when the running speed reaches more than 115 kilometers, its respiratory system.

and the circulatory system are overloaded. Because cheetahs are unable to expel the accumulated calories all at once, they are prone to prostration, so cheetahs can only sprint for a few hundred meters.

3. Adaptable ants are the most common insects on the earth and the most abundant type of insects. Since all kinds of ants are social groups, they were commonly called "ants" in ancient times. According to the modern scientific classification of morphology, ants belong to the class of bees.

Ants can live anywhere they live and are the world's fight against natural disasters.

The most capable creature.

It is a polymorphic social insect. 4. The champion of low temperature and cold tolerance is the Arctic duck, not the Polar White Bear.

Because the Arctic duck can withstand the cold of minus 110, followed by the seal, and then the white bear. White bears can only endure the test of minus 80. The Arctic duck is resistant to extreme cold because it has a fine layer of plush under its feathers, which wraps around its body like a blanket, so it keeps warm from the cold.

5. It can discharge electric eels.

The eel-shaped South American fish belonging to the family of bareback electric eels can produce enough current to stun people, and are the freshwater fish with the strongest discharge ability, with an output voltage of up to 300-800 volts, so electric eels have "high-voltage lines" in the water. called.

The details are as follows:

1. Fish characteristics: aquatic animals (can only live in water). **Covered with scales, it is an ectothermic.

An ectotherm animal that has fins (can swim in water) and breathes with gills. In vitro fertilization, mainly oviparous, partly viviparous and ovoviviparous.

2. Amphibian characteristics: they need to spend their juvenile period in the water. It has adapted terrestrial.

The skeletal structure, with limbs, is moist and has many glands. There are no scales or body hair on the body. The tongue is bifurcated, inverted, and can stretch outward. Fish mating and fertilization take place in water. The larvae breathe with gills, while the adults breathe with **, the inner wall of the mouth and the lungs.

3. Reptiles.

Characteristics: Terrestrial animals. **Covered with scales or shields, with a waterproof outer skin, water loss, ectotherm (dependent on outside temperature or heat sources to change its body temperature).

It is mainly found in warmer parts of the earth. In vivo fertilization, oviparous or ovoviviparous. The eggs are laid on land, and the eggs are covered with a waterproof outer package.

4. Bird characteristics: the whole body is covered with feathers, the body is streamlined, and there is a beak. The eyes are on both sides of the head, and the neck is long and flexible and can be turned 270 degrees.

The forelimbs are specialized into wings, and the hindlimbs have a scaly outer skin with four toes. Homeotherms (they can generate heat through their own physiological processes, and they can maintain a high and constant body temperature even when the outside temperature is low). The average body temperature is higher than that of mammals.

It is about 10 degrees higher (42 degrees on average) and oviparous.

5. Mammalian characteristics: there is a spine connected by many vertebrae in the body; The body is covered with hair, and there is oral chewing and digestion, which can improve energy and nutrient intake; Viviparous (platypus.

except Echidna), lactation; Constant temperature. The body temperature can also be kept relatively constant when the ambient temperature changes, which reduces the dependence on the external environment and expands the distribution range.

The most striking features of the animal:

The largest living vertebrate in the world is the blue whale. It is 33 meters long and weighs 181 tons.

The smallest vertebrate animal in the world is the amawu frog. It is only millimeters long.

The largest invertebrate in the world.

It's king squid. It is 15 meters long and weighs up to 400 kilograms.

The smallest invertebrates in the world are single-celled organisms.

Paramecium. It is only 280 microns in length.

The largest dinosaur in the world was the fragile dinosaur. It is 62 meters long and weighs 180 tons.

The smallest dinosaur in the world is the Saurus vulgaris. It is meters long and weighs only kilograms.

The smallest insect in the world is an egg wasp of the Hymenoptera tasselidae. It is only millimeters long. The body weight is only milligrams.

The largest insect in the world is the giant dragonfly, which lived about 300 million to 100 million years ago. Its wings can reach up to one meter.

The smallest spider is in Panama.

Found in tropical forests, it is millimeters long.

The smallest bird in the world is the "honey-sucking hummingbird", which weighs 2 grams and is 5 centimeters long from the tip of the beak to the tip of the tail.

The smallest fish in the world is the fat baby fish. It is only 7 mm long and weighs only 1 mg.

1. Dogs have a very strong sense of smell.

2. Elephants are the only animals that can pinch their enemies with their noses.

3. Bees can use different flying patterns to convey information.

4. Cheetahs have the fastest running speed.

5. Ants have amazing strength.

6. Arctic ducks can withstand low temperatures of minus 110°.

7. The bodies of several aquatic animals, such as electric eels, electric catfish, electric rays, and star-gazing fish, have strong discharge ability.

Animals: Animals are a species of living beings. They generally feed on organic matter, can feel, can move, and are able to move autonomously.

Something that is active or capable of moving. Including people. According to fossil research, the first animals to appear on Earth originated from the ocean.

After a long geological period, early marine animals gradually evolved into various branches, enriching the early life forms on earth. Prehistoric animals appeared before the advent of humans and flourished during their respective periods of activity. Later, they became extinct one after another in a constantly changing environment.

However, the animals on Earth continue to evolve and reproduce from the lower to the higher, from the simple to the complex, and have the diversity they have today. Scientists divide the extant animals known to humans into two major types: invertebrates and vertebrates, according to the presence or absence of a vertebrate in their bodies.