Preborn deformations of dogs are mostly genetic problems, caused by factors such as closely related reproduction, especially in recent years, when the pet industry has experienced new trends.
In pursuit of pure varieties, large numbers of pets tend to reproduce, leaving many of them with a congenital disease.
One morning at a pet hospital in California, an employee saw a box in front of the hospital.
Such images have appeared in hospitals countless times, and employees can guess that the boxes may contain abandoned cats and dogs, or other animals, even if they are angry.
He's also very helplessly approaching the box to see what's in it.

As the boxes opened, the staff saw a small dog convulsing in the corner, displaying only a pair of scared eyes and watching the staff with fear.
Article 5 “leges”
Through the dog's face, shape and hair, the employee can see at first sight what kind of dog it belongs to.
Turns out it's a bulldog, and it's the dog itself that's the only one who can throw them away because they're cute.
The staff took the dog back to the hospital, but when it came out, people realized something was wrong with the dog.
Next to its tail, there was an extra leg, initially thought the dog had an extra tail.
When the doctor examined it, he was quite certain that it was a leg with three toes, soles and ankles at the end of the leg, which surprised the people present.
Because the dog couldn't get to the ground, the dog walked around like a leg, and it couldn't control the balance.
It's a dog accident.
After discussion by doctors, the current fifth leg does not affect the life of the dog, so there is no need for forced removal and it is then handed over to the animal shelter to find a new home for it that can accommodate it.
The shelter then picked up the dog and felt that it was unique in shape, so it took a lot of videos and found a new home for it.
But I didn't expect these super-cool pictures of dogs to pop up overnight and attract tens of millions of viewers.
There's a lot of good people who are worried about the dog, and they're concerned about whether his body's gonna be sick.
And I wonder if the fifth leg will grow up with it, and then how the dog will walk, and whether it will be a barrier.
The body changes suddenly.
However, the more worrying it is, the more likely it is that, a few days after its arrival in the shelter, the dog begins to experience an abnormal temperature, a rapidly decreasing mental state and is taken to hospital overnight.
As a result of a medical examination, it was found to be increasing in the number of white blood cells, requiring hospitalization to observe whether there would be any subsequent changes.
During the course of the treatment, the temperature of the dog under the care of the doctor was finally controlled and the mental state gradually improved.
It can only be relatively physical, and it takes more time and energy to feed, making adoption more difficult.
In fact, dog deformation is a common thing. It's a mutation of its own genes.