Dogs breeding
Selective breeding has occurred for thousands of years in numerous domesticated species, not just dogs. Our canine friends first developed breeding for specific behavioral traits, not conformational traits. However, where and when certain types of dogs originated is still uncertain.
Most dog breeds we recognize today were developed in the last 150 years, thanks to The so-called the Victorian Explosion. During this time in Great Britain, dog breeding intensified and expanded, resulting in many of our most recognizable breeds of dogs. The Victorians, influenced by Darvin’s ideas, became passionate about breeding for the ideal of a certain breed. Many of the conformational traits that we consider classic for a certain type of dog have their origins in this era.
Breeding for conformational traits continued through the 20th century. The end result is the 400+ types of dogs recognized as distinct breeds.
As we approach the third decade of the 21st century, technological advances have given scientists a new perspective on humankind’s best friend. Research is being carried out to fight various diseases, e.g. cancer.

Info source: https://www.morrisanimalfoundation.org/article/evolution-of-dogs
Image source: https://namnguyenwrite.medium.com/where-did-dog-breeds-come-from-5705e5ece771
What exactly are conformation traits?
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