Recently,
Shanghai Huangpu River
A crocodile was discovered in a flash
Aroused widespread attention
Some netizens think this is a Yangzi crocodile
And some experts also think it may be Siam crocodile
No exact answer yet
l0 Then
About crocodile
How much do you know?
Let's take a look together
Whenever you talk about crocodile
What will come to your mind
Is the "uninvited guest" that people fear the most in the jungle adventure
Or the fierce beast in the zoo
crocodile is meat Eating egg-eating reptile
is the oldest in the same era as dinosaurs more than 200 million years ago. reptile
is one of the most primitive animals that have survived so far
is also one of the oldest "living fossils" of the earth.
Types of crocodiles in my country
There are many types of crocodiles in my country The only species of Yangtze alligator
Other crocodiles are alien species
Characteristics and living habits of crocodiles
When it comes to crocodiles
In most people's minds
An eye exposed to water
The eyes of crocodiles grow on the upper end of the head
Except for the eyelids
3 There is also a transparent instant membrane
Can make the crocodile adapt to the environment in the water
The nostril of the crocodile is on its back
There is a valve inside
When it dives into the water
The valve automatically closes the valve to prevent water from flowing into the nostril
The pharynx of the crocodile
There is also a thin and elastic membrane
When this membrane is When closed,
Even if it opens its mouth wide in the water,
Water will not enter the respiratory tract and lungs
Crocodile usually likes to live in beach areas of lakes and swamps
or wetlands in hills, mountain streams, grasses, basils
When people describe crocodiles crawling
will use slow progress or stagger or stagger
This is actually correct The biggest misunderstanding of crocodiles
The hearing and vision of crocodiles are very sensitive
The body is also very flexible
The crocodiles are thick and long tail
It is both the "rudder" for them to swim
It is also their tool for predation and weapon for defending enemies
It looks slow-moving crocodiles
How do they hunt
It first dives its body into the bottom of the water
secretly approaches the small animal
stares at the other party
Then suddenly jumps up
catches the small animal
holds it into the river and drowns
Finally, a good meal
Among the many small animals
Crocodile likes wild ducks, hares, frogs, mouse, fish, etc.
Yangtze alligator
Yangtze alligator is a small crocodile unique to China
Historically, it has been widely distributed in eastern China
Yellow River , Huaihe , Yangtze river and Qiantang River and other river basins
Adult Yangtze alligator 1.5 meters ~ 2.1 meters
Weight 30 kg ~ 45 kg
Their heads are relatively large
There are more granular and striped patterns on the scales
The eyes are earth-colored
The Yangtze alligator has superb skills in digging holes and holes
The head, tail and sharp toes are all tools for them to dig holes and holes
The Yangtze alligator is an amphibious reptile
Like perch Indulge in sparsely populated rivers, lakes and ponds
Mainly feeds on fish, shrimps, Mollusks , insects and birds
Yangtze alligators have a particularly strong ability to endure hunger
Can not eat for several consecutive months
Currently, the number of Yangtze alligators is very rare
is an endangered species
It is a national first-class key protected wild animal
The value of Yangtze alligator
The Yangtze alligator is good at digging holes to nest
They will play a loose role in some plate-clad soil
It is conducive to plant growth
The Yangtze alligator is an ancient reptile left in the Mesozoic period
Its bones have great similarities with the bones of dinosaurs
Related research on Yangtze alligator
Related research on Yangtze alligator
There are great similarities with the bones of dinosaurs
Related research on Yangtze alligator
Related research on Yangtze alligator
Related research on Yangtze alligator
2 has a certain guiding role in studying the origin and evolution of dinosaurs and the Mesozoic reptile era has a certain guiding role Siamese crocodile Siamese crocodile is a medium-sized crocodile Adult crocodile can reach 4 meters long Common ones are 3 meters Siamese crocodile upper body is olive green or brown-green with black spots The tail and dark horizontal spots on the back Siamese crocodiles mostly live in subtropical areas Swiglands, slow water flow in rivers Grounds hms
also eat Amphibians , reptiles and small mammals
Crocodile small classroom
Do you know what crocodile tears mean
Crocodile tears are usually used to describe some hypocritical people
Crocodile tears when eating crocodile
People think this is the mercy of crocodile for prey
People think this is the mercy of crocodile for prey
People think this is the mercy of crocodile for prey htt ml2
In fact, this is because crocodiles secrete sweat when they eat
and their sweat glands are close to the eyes
, so that we have the illusion that it is crying
In my country
Wild crocodiles and artificially farmed crocodiles enjoy the same level of protection
If it is not approved by relevant departments
It is illegal whether it is sold by merchants or purchased by citizens.
