Dogs was started in order to bring out favorable characteristics and to breed out
undesirable ones
the problem with this is that the humans who started this did not have any regard for
How the changes to these animals would affect their long and short term health as an individual animal and as a breed as a whole
Today more and more emphasis is being put on non selective breeding and not promoting
the breeding of pure breeds
The photos that follow show how dogs have changed and the effect that selective breeding can have on animals in just 100 years
Pugs
One of the most desirable traits about a modern pug is its double curled tail?
This is actually a genetic defect and if severe enough it can actually lead to paralysis
Pugs did not originally have the double curved tail. They also have a host of breathing and respiratory problems
Basset hounds
The basset hound was selectively bred so much that it caused a shortening of the hind legs
The longer droopy ears and droopy eyes that are prone to certain eye conditions in dogs
Such as entropion and ectropion the basset hound özil now has an excessive amount of skin for its body
German shepherds
German shepherds were originally medium-sized dogs with no slope to their back now
They have shorter hind legs and are about 30 pounds heavier than what they used to be
There used to be a time. When a German Shepherd could jump over an 8 and a half foot wall
English bulldogs if any breed has come to signify what can go wrong with selective breeding
It's the English bulldog pretty much every health problem. You can think of in a dog
They're plagued by the median age for an English. Bulldog is six point two five years
According to a 2004 study by the Kennel Club their sheer mass alone makes mating and birthing almost
impossible without medical intervention
- yawns -
Anne's body had been elongated which gives them the highest odds of any dog to develop intervertebral disk disease
Their legs have been shortened so much that there's barely any clearance between them and the ground anymore
Bull terriers
Bull Terriers have changed dramatically in a hundred years
Selective breeding has caused them to have teeth problems skin allergies as well as compulsive tail-chasing not to mention the deformed skull
Doberman Pinscher
Dobermans are very prone to something called cardiomyopathy
Which is an enlarged heart
Another condition that's the result of selective breeding is cervical vertebral instability
This is caused by a malformation of one of the vertebrae in the neck which can lead to excessive pressure on the spinal cord
This can cause weakness in the back and lack of coordination in the hindquarters
St. Bernard
Originally bred as a working dog. You won't find many of these dogs doing that anymore
Overheating is a major concern for these very large animals and their workload must be closely monitored
Their large size also makes them more prone to hip and elbow dysplasia
Cardiomyopathy is also something st. Bernard owners need to be aware of as well as certain kinds of cancer such as osteosarcoma
Boxers the flattening of a dog's muzzle is almost never a good thing in
Boxers and many other breeds this can lead to breathing and respiratory problems
boxers also face problems with a specific
Cardiomyopathy that only boxers can get that's usually fatal
Salukis
Salukis are prone to high problems such as progressive retinal atrophy
Corneal dystrophy and glaucoma. They can also be susceptible to von Willebrand's disease
which is a blood-clotting disorder as well as
Hypothyroidism as far as physical appearance goes the Saluki has not changed much. However
Bearded collies
Bearded Connolly's many times will suffer from hip and elbow dysplasia. They can also develop eye problems with autoimmune
Thyroiditis a selective breeding has made their coat absolutely huge as well
White Terriers
These dogs can be prone to many health problems like atopic dermatitis
Luxating palate eye that's kneecaps that pop out of normal position
Aggression lagged calper 'this disease a disease involving the hip joint dry eye
Addison's disease and a host of other elements
Physically, you can see a change in the head and ears. Although the legs are much hairier and see a little shorter
Many of these dogs were perfectly healthy breeds before humans started interfering with and manipulating their genetics
All for a physical characteristic that some rich person wanted more pronounced in their dog
It can be really sickening when you think about it a little bit
Dogs have died because people were so arrogant
that we felt it was better to have a dog with a little more hair on its head and
Kill some to get it done than to just leave the breed alone and appreciate dogs for what they are man's best friend
Share these photos of how dogs have changed with your friends and let us know your thoughts in the comments
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