The results of inbreeding can be very distressing to witness. In this Instagram post, we see a captive lion with skull deformities, and in this post, we see another lion with drastically shortened ...

If you follow media coverage of koalas, you could be forgiven for feeling confused. Recent stories describe a “koala paradox”: endangered in the north of Australia, abundant in the south; genetically ...

Purebred dogs might look flawless on the outside, but their beauty often hides a disturbing genetic truth. For generations, breeders have prioritized traits like coat color and snub noses over genetic ...

Traits particular to certain dog breeds -- the distinctive spots of a dalmatian or the stubby legs of a dachshund -- are often achieved through inbreeding. But most breeds are now highly inbred, ...

The majority of dog breeds are highly inbred, contributing to an increase in disease and health care costs throughout their lifespan, according to new research. Dog breeds are often recognized for ...

As its name implies, the Devil's Hole pupfish lives in a truly hellish environment. Confined to a single deep limestone cave in Nevada's Mojave Desert, 263 of them live in water that hovers around 93 ...