Dog breeding has been known for centuries, but only the last century has significantly changed the appearance of some breeds. Meet seven dog breeds that differ significantly from their fathers. These are the genes that human beings interfere with the most.
Dogs are the most physically diverse mammals in the world. In fact, it is impossible to give an unequivocal answer to the question of how many breeds of dogs there are. The International Kennel Club (FCI) says there are currently about 340 different breeds.
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Our four-legged friends differ in many ways – the shape of the head, color, length and type of coat, size, temperament, character or hereditary health problems. We knew most of them without any problems, although sometimes it is strange that they are one and the same species.
However, there are several dog breeds that are particularly disadvantaged by breeders. For the last 100 years many tetrapods have been genetically modified to perfect their physiognomy as much as possible and to adapt to the latest trends and preferences of future owners.
Although the ultimate goal of breeders is to maintain the best qualities in dogs – both physical and psychological – it is enough to compare the modern appearance of each breed with their ancestors to question this motivation.
As a result of the intersection of individuals with the desired traits, often through kto raise relatives or establish a kinship relationship, Quadrupeds have lost their resemblance to their ancestors and changed their original appearance. What did they gain in return? Wide range degeneration and genetic diseases.
Today, some dog breeds are the result of intensive and highly selective breeding, which has become a lucrative business. All at the expense of health and well-being. Below is a collection of 7 dog breeds with the most harmful mutations in their genes. The sharp difference in their appearance compared to the photographs of their ancestors is obvious to the naked eye.
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1. Bull Terrier
The former bull terrier was a slender dog with a slender structure and a rectangular mouth. As a result of deliberate, long-term manipulation of genes unfavorable mutation of the ovarian skull and excess tooth growth were maintained. Representatives of this genus also often suffer from deafness and atopic dermatitis.
2. Basset iti
One of the breeds of dogs belonging to the group of dogs and dogs has become a dwarf animal with an elongated body. For this reason, there are degenerations in the spine. Even worse, giant sagging ears attract the skin around the eyes, so bassets often suffer from conjunctivitis. They also have problems with recurrent infections caused by anaerobic bacteria that grow under the ears.
It took boxers 100 years not only to shorten the front of the skull, but also to raise it. The result? These dogs are very intolerant of both low and high temperatures and are therefore prone to inflammation of the upper respiratory tract. In addition, they have almost completely lost their ability to effectively regulate thermoregulation. They also belong to the most common group of dogs with cancer.
4. German Shepherd
German Shepherds have also been particularly hard hit in the last century. It used to be considered a well-functioning dog, but now many are disabled at a relatively young age.
In the past, during experiments with this breed of dog, the animals had to cross a 2.5-meter-long wall. Today, such activities are beyond their means. Due to the effect of the transition to get a bent back, members of this genus suffer from hip and elbow dysplasia, osteitis and cancer.
Some of the most popular dog breeds in the modern world are actually victims of consumer whims. Four-legged animals from China used to live in luxury and for 1000 years were bred only for emperors and their families. After leaving the royal palace, foreign breeders decided to ignore their “functionality” and focus on getting the look you want.
The most distinctive feature of the pug is its extremely short mouth or nose. For this reason, these dogs often have respiratory problems and pupils that come out of very shallow nests and are damaged. Pugs This breed is especially sick due to the structure of the trachea and the anatomical shortening of the neck. They are also prone to allergies.
Although short claws are an integral part of the dachshunds, only 100 years ago they were allowed to move freely and hunt. Their current appearance is the result of a mutation that led to the dwarfism. The growth plates in the paw bones stop functioning prematurely and the cartilage hardens quickly.
Dachshunds, due to their specific anatomical structure, are the most susceptible of all types to spinal degeneration, which causes injuries, disc prolapse and paralysis. Thus, the term “dachshund paralysis” refers to a disease caused by discopathy, ie degeneration of the intervertebral disc.
7. English Bulldog
The English Bulldog separated from the mastiffs 1,100 years ago. A 2004 study of 180 dogs found that life expectancy was just over six years. This is the result of excessive human intervention in the genetics of these dogs.
Bulldog is a breed of brachiocephalic and is therefore characterized by a short mouth and a flat face. These animals have skin problems, impaired thermoregulation and a high incidence of cancer. Due to their compact design, it is impossible to keep them hygienic around the anus and genitals.
Particularly cruel in terms of breeding, in some cases these dogs do not even have the ability to reproduce independently, and need the help of a veterinarian, both during mating and at birth.
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Source: WE Mason “Gender of All Nations”, crazynauka.pl, inna.onet.pl, windrak.nl