Some dog breeds have been around for hundreds of years... but they weren't exactly how we know them today. Those "purebred" dogs were bred for certain characteristics and over time, breeders hoped to perfect these dogs. They wanted to make them more beautiful, more athletic and fit their "breed standards" better. But, the only thing they did was make those dogs mere shadows of their former selves thanks to gene mutations and manipulation. The dogs are inbred mutants, prone to genetic defects and disorders that sometimes lead to a lifetime of pain or even death. The older images you see below are from a 1915 book called "Breeds of All Nations." Those images were placed side-by-side with the modern versions of the dogs. This will surprise and disgust you.
1. The Bull Terrier used to be an athletic, attractive dog. Over the years, its snout was mutated to be oversized leading to respiratory issues, plus many Bull Terriers now have supernumerary teeth and are compulsive tail-chasers.
2. The Basset Hound never used to sit so low. The dog has suffered changes to its rear leg structure, has excessive skin, vertebra problems, droopy eyes prone to entropion and ectropion and excessively large ears.
3. The Boxer now has a much shorter face with an extremely short snout. The hindquarters are also lower. Like all bracecyphalic dogs, the Boxer has difficulty controlling its temperature in hot weather, the inability to shed heat places limits on physical performance. The Boxer has also one of the highest cancer rates and many Boxers suffer from seizures.
4. The English bulldog has evolved into a creature that suffers from almost every known disease. A 2004 survey by the Kennel Club found that they die at the median age of 6.25 years. They cannot mate without medical intervention. There's no such thing as a healthy bulldog.
5. The Dachshund, at one time, used to have functional legs and necks for their size. Their backs and necks have gotten longer, chest jutted forward and legs have shrunk to such proportions that there is barely any clearance between the chest and floor. Their risk for intervertebral disc disease which can result in paralysis is incredibly high. They are also prone to achondroplastic related pathologies, PRA and problems with their legs.
6. The German Shepherd Dog has been mutated into a dog that can barely walk, compared to its predecessor. The German Shepherd used to be a large, muscular dog that could jump and run without any issue. Now, it is an angulated, barrel-chested, sloping back, ataxic breed. The breed changes serve no purpose and only hurt the dog.
7. The St. Bernard has always been a large dog, but now the modern breed has been oversized, had it’s faced squished in, and bred for abundant skin. The dog quickly overheats and cannot work like the breed was meant to. Their common diseases include entropion, ectropion, Stockard’s paralysis, hemophilia, osteosarcoma, aphakia and fibrinogen deficiency.
7. The Pug is another dog that was bred to be extremely brachycephalic breed (with its nose squashed in) and it has all the problems associated with that trait; high blood pressure, heart problems, low oxygenation, difficulty breathing, tendency to overheat, dentition problems, and skin fold dermatitis. Even the double-curl tail is actually a genetic defect, in more serious forms it leads to paralysis.
And if new puppies don't fit these ridiculous (and often harmful) breed standards? They are culled by breeders, which means completely healthy puppies are euthanized, just because they don't look perfect. This is sick. Source: dogbehaviorscience.wordpress.com