Think all cat breeds are products of human meddling? Think again! While it's true that many of our beloved feline companions owe their specific traits to centuries of selective breeding, some breeds actually arose more naturally, shaped by their environments. But here's where it gets controversial... even these "natural" breeds aren't quite as wild as you might think. With over 600 million cats sprawling across the globe, it’s estimated that less than 10% are actually classified as a specific breed. So, what's the real story behind these relatively rare purebred felines?
According to Leslie A. Lyons, a respected cat geneticist at the University of Missouri College of Veterinary Medicine, the vast majority of cat breeds we know today emerged relatively recently – within the last 140 years. These breeds were largely sculpted by human breeders who carefully selected for particular physical characteristics, like coat color, fur length, or body size. It's a process akin to carefully crafting a sculpture, slowly refining the form to achieve a desired aesthetic.
However, Sarah Hartwell, a dedicated cat genetics enthusiast and the founder of the comprehensive cat resource MessyBeast, offers a fascinating counterpoint. She argues that the precursors to natural cat breeds develop in much the same way as wild animal species. “Natural breeds could be considered a step along the road to speciation,” Hartwell explains. And this is the part most people miss... she emphasizes that environmental adaptation plays a crucial role in their formation.
Consider the majestic Siberian forest cat. In the harsh, snowy landscapes of Western Russia, cats with thick fur and sturdy builds had a distinct advantage. Over generations, this natural selection favored those traits, eventually leading to the development of the Siberian breed. Similarly, in the balmy, humid regions of Southeast Asia and the Indian Ocean coast, cats with short hair, slender bodies, and large ears thrived, laying the foundation for breeds like the Abyssinian. It's a prime example of "survival of the fittest" at play.
But environmental adaptation isn't the only pathway to natural breed development. Geographic isolation can also play a significant role. This phenomenon, known as the "founder effect," occurs when a small, isolated population carries a particular gene, even if that gene isn't necessarily beneficial. Due to limited genetic diversity and inbreeding within the group, the gene becomes more prevalent. A classic example is the Manx cat from the Isle of Man, a self-governing British Crown Dependency nestled in the Irish Sea. A mutation causing a short tail spread through the island's cat population, ultimately giving rise to the tailless Manx breed we know today. Sadly, the gene responsible for the Manx cat's lack of a tail can also lead to serious spinal problems.
However, even though the origins of these natural breeds lie in the wild, it's important to remember that modern-day cats of these breeds are not entirely untouched by human influence. "All breeds, no matter what species, have human influence," Lyons stresses. A study she co-authored in the journal Animal Genetics revealed that selective breeding in cats has exploded in the past century. This has, in many ways, overridden the natural environmental pressures that initially shaped these breeds.
For instance, the Manx breed, with its potentially debilitating tail mutation, likely would have died out naturally due to a lack of genetic diversity. Yet, thanks to human intervention and intentional breeding, the breed persists. But here's where it gets controversial... some experts are advocating for the breed's eventual phasing out, or at least for breeding programs focused on producing healthier, tailed Manx cats.
Some natural breeds have maintained a stronger connection to their wild roots than others. Modern Siberian cats, for example, often retain genetic and physical similarities to their ancestors because breeders regularly introduce new cats from the breed's native region into their breeding programs. This helps to maintain genetic diversity and preserve the breed's original traits.
On the other hand, some breeds have been significantly altered through crossbreeding and selective breeding. Russian Blues, for example, were crossed with Siamese cats after World War II to save the breed from extinction. Since then, breeders have further refined the breed into distinct "types" that can vary significantly from the original Russian Blue cats.
So, do "natural" cat breeds truly exist? The answer is a resounding yes, but with a significant caveat: they are not entirely natural. While a Maine Coon purchased from a breeder might resemble the cats discovered in Maine in the 1800s, its large size, square jaw, and polydactyl paws (six or more toes) have been meticulously preserved and, in some cases, exaggerated through artificial selection. It all boils down to human preferences and the whims of popularity. "One lineage of cats might become very popular and change what the breed looks like, and then it might swing back another direction depending on the next new craze," Lyons explains.
What do you think? Should breeders focus on preserving the historical, naturally-selected traits of these breeds, or is it acceptable to further refine them according to modern preferences? Should we continue breeding Manx cats, knowing the potential health risks associated with the breed's defining characteristic? Share your thoughts in the comments below!
