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Pug
The Pug is a dog that has been bred to exaggerate the trait.He has High blood pressure, heart problems, low blood oxygen levels, breathing problems, a tendency to overheat/develop heatstroke, dental issues,and skin fold dermatitis.This dog has a shortened muzzle mouth was formed, along with the stockier abdomen and spinal defects that come from the double curled tail.This dog is a highly desirable double-curl tail, which is a genetic defect that can result in paralysis. -
Chow Chow
Chow Chows originated as a guard dog in China, and is one of the most ancient breeds still in existence today. Because of this, they’ve had quite a number of years to change their appearance. While the former dogs had a little less coat and longer muzzles, the modern dogs have a much more mastiff-style look to their heads and bodies. -
Rottweiler
The Rottweiler is one of the oldest of herding breeds.For the next two centuries the Roman drover dogs were continually used in herding and driving cattle for trade even after the Romans were driven out of the area by the Swabians.These dogs possessed a strong guarding instinct. They were also intelligent, rugged, and displayed impressive endurance.The Rottweiler was a well-utilized breed until the mid-19th century. -
West Highland White Terrier
The fur might have become a bit longer and thicker. -
Saint Bernard
Today’s version of the once-highly skilled working dog is supersized, with a pushed-in face and excess skin.The Saint Bernard doesn’t do much work these days, because he quickly overheats. Some of the diseases he’s prone to include eye and eyelid abnormalities, Stockard’s paralysis (a spinal cord disorder), and bleeding disorders.The Saint Bernard are most likely decedents of the mastiff style Asiatic dogs used by Roman soldiers.These canines were in the Alps as rescue dogs in the 11th century. -
German Shepherd
The German Shepherds have become larger, and their fur has become longer and thicker. The skeleton has changed as well: now the сroup is lower, and the chest is wider.The GSD was medium-sized dog averaging 55 pounds. Today’s GSD is a good 30 pounds heavier, with a barrel chest, sloping back, and often a “drunken” gait. -
Bull Terriers
The Bull Terrier,the dog of right now has an altered skull and thick abdomen--the face has become shorter, and the jaws have become larger.The bodies are lower and stockier now, in general.Today’s Bull Terriers are prone to a long list of disorders, including extra teeth and compulsive tail-chasing.The Bull Terrier originated as a bull baiting dog until the sport was outlawed. This dog has changed a lot over time. -
Boxers
The Boxers have shorter and upturned faces now. The proportions of the body have slightly changed too.Boxers are brachycephalic dogs, meaning they have pushed-in faces. Like many brachy breeds, the Boxer’s already short muzzle has been bred even shorter over the years, and slightly upturned as well. Brachys have difficulty breathing and controlling their body temperature, which often places extreme limitations on their physical abilities. -
Dachshund
Today these dogs have a longer face and body, a slightly wider chest, and much shorter hind legs.Dachshunds a century ago had short but functional legs and necks in proportion to their overall size. Since then, they have been bred for longer backs and necks, jutting chests, and legs so short their bellies barely clear the floor. Doxies have the highest risk of any breed for intervertebral disc disease, which can cause paralysis. -
Basset Hound
The Basset Hound has gotten lower, has suffered changes to its rear leg structure (the hind legs are shorter), has excessive skin, vertebra problems, droopy eyes prone to entropion and ectropion and excessively large ears (ears are a lot longer now).The face, as the legs, has become shorter, and the skin has more folds now.Today’s Basset Hound’s droopy eyes are prone to eyelid abnormalities. -
Saluki (Persian Greyhound)
The Salukis have become a lot taller and thinner. Now they have long and very thin legs, as well as longer ears.The Saluki's origins are where agriculture originated. They were bred in the Fertile Crescent.He is the very definition of grace and speed, well deserving of the name bestowed on him by his Arab breeders — The Noble. The Saluki is bred for speed, strength, and endurance, qualities that are evident in his long, narrow head and sleek yet muscular body. -
Chinese Shar Pei
While the traditional Shar Pei had only mild wrinkling, the modern-day dogs have an enormous amount of excess skin. Fortunately, there are breeders working towards the traditional Bone Mouth Shar Pei – a bloodline much closer to the original dogs.The Shar Pei breed comes from the Guangdong province of China. The original Shar-Pei from China looked very different from the breed now popular in the West. -
English Bulldogs
This dog has become more massive and stockier. The chest has become wider, the legs have become shorter, and the face is more flattened now. The Bulldog also has more skin hanging on its body.
The dog we now know as the English Bulldog started off as a bull baiting dog in the 1800’s. Their agility has almost disappeared with their new body type. What used to be a short-nosed, but muscular and squarer dog has now become mostly fat and wrinkles. -
Poodles
For all Poodles (Standard, Miniature, and Toy) common health concerns include hip dysplasia, progressive retinal atrophy, epilepsy, Addison's disease, thyroid issues, hypoglycemia, bloat, and collapsed trachea. -
Neapolitan Mastiff
This Italian Mastiff has become almost unrecognizable. While the former dogs maintained a more mastiff-like appearance, the modern-day Neo can barely be found underneath his excess skin. Neapolitan Mastiffs were once large, agile, and powerful dogs. While they may still be large and powerful, they have become riddled with health concerns and a lack of working ability due to their appearance. -
Bearded Collie
It’s quite obvious that the Bearded Collie has been seriously toyed with genetically. They suffer from allergies as a result.With a lifespan of about 12 to 14 years, the Bearded Collie is susceptible to some minor health problems, including colonic disease, canine hip dysplasia (CHD), hypoadrenocorticism, pemphigus, and epilepsy.
