3 Lizards
When it comes to lizards, many people feel unfamiliar and think that they can only be seen in the tropical jungle. If someone tells you that lizards live in almost every family in the world, you must be very surprised. It is true that the gecko is a lizard, and many people have geckos that help people eliminate pests in their homes.
Lizards are the genus of the reptiles, and the species are very prosperous, with 3, 000 species. Lizards are mostly carnivorous, feeding on mollusks such as insects and snails; others are omnivorous, sometimes eating snails in addition to fruits and flowers; and some large lizards with moderate temperament are Pure "vegan". Lizards have many natural enemies. Spiders, scorpions, snakes, birds, and mammals all hunt lizards. North American poisonous lizards and Mexican poisonous lizards defend themselves with poison.
Other lizards rely on special defense or escape skills when they encounter natural enemies. Most lizards have good camouflage, and when they are in danger, they just need to wait for the predators to leave. The chameleon can change its body color to match the background color, and it stays motionless when the predator approaches.
There are also some lizards that will surprise or fear the predators and win the chance to escape. Australian umbrella lizards will suddenly open their pleats, some lizards will stretch their throats and squeak, and some suffocating will make them swell bigger or bigger than the predators, and even stick out colored tongues.!
Many lizards have special escape methods. If the predators catch the tail, they leave a twisting tail that distracts the predator"s attention, so that they can escape. Some lizards have spikes that can stab the predator"s mouth; others have long, slippery scales that make it difficult for predators to catch.
Of course, a quick escape makes the enemy unable to catch up, and it is also a good way to survive. The horned lizard is the most eccentric lizard in defense. It scares away the predator"s weapon and turns out to be its own blood. It uses special muscles to burst the micro-vessels inside and around the eyes, and ejects blood 1 meter away to scare off. Predator.
Chameleon is a very famous lizard whose body color changes with light and temperature. Where the light is strong and the temperature is high, the chameleon will turn green, where the light is dark and the temperature is low, and the chameleon is brown.
Chameleons may even have different body colors due to different moods. Another very interesting feature of the chameleon is that its two eyes can be rotated separately, each looking at each other, which allows it to quickly find prey. The gecko"s toe is a very important climbing organ. The gecko has a deep groove on its toe, like a "sucker".
When the gecko is pressed flat on the glass, the air between the toes and the glass is discharged and adsorbed on the glass. The gecko also has fine cilia on its toes, and there are hundreds of small protrusions on each cilia. These cilia and protrusions can increase the friction between the toes and the glass, so that the gecko can walk freely on the glass.
4 Snakes
Snakes, especially snakes, are reptiles that make everyone fear. They don't have limbs, but they crawl very fast. The slender body is covered with scales, the snake"s head is angular and the eyes on the head are shining with horrible light.
The mouth of the snake can be very large, and the food that is bigger than the head can be swallowed. Snakes are all carnivorous, feeding on birds, lizards, rats and mammals. Some snakes also kill the same species, while sea snakes feed on fish. The snake"s ear has been degraded, the hearing is very poor, and its vision is very poor, only to see things in the vicinity.
So how can a snake know if there is any prey nearby? Snakes can rely on the skin to feel the slight vibrations from the ground or the air, which replaces the ears with the skin of the whole body. The snake"s sense of smell is very developed. Unlike other animals, the snake"s sense of smell receives the tongue, not the nose. Snakes often stick their tongues out and keep shaking.
The snake"s tongue has two forks that absorb tiny odor particles in the air and distinguish between different odors. The snake"s eyes have degenerated, and it can capture the voles at night, relying on the cheeks between its eyes and the nostrils. The cheek is like a snake"s infrared receiver, and the position of the prey can be known according to the received temperature.
Based on the function of the snake"s cheek, the scientists invented an infrared automatic tracking device. After the projectile was launched, it could automatically track the target and destroy it. The tooth of the snake is connected to the venom gland of the head. When the snake preys, the venom flows out along the fangs and paralyzes the prey.
There are two kinds of fangs, one is the ditch, the ditch has a groove leading to the venom; the other is the tooth, the tooth is slender as a needle, and there is a tube in the middle. The tube is empty and communicates with the venom gland. The venom is also divided into two types, which affect the prey in different ways. One is neurotoxicity and the other is blood poisoning.
Not all snakes live on land, and some live in the water, calling them snakes. Most of the snakes are non-toxic, but the sea snakes living in the ocean are all toxic. Their lungs are very large and can absorb a lot of air at a time. The sea snake living in the lake is able to catch the fish to the estuary while chasing the fishing.