Nine thousand years ago, humans began domesticating cats. Nine hundred years ago ... Females with just one orange X chromosome can present as tortoiseshell or calico. These mottled and patchy ...

Just take Melanie, a shelter cat who was recently returned from being "too quiet." Unfortunately, since being back at the animal shelter, Melanie has had a difficult time catching the eye of ...

Nicki the talking cat is the perfect example! This sweet senior cat is the queen of complainers, but she always serves her ...

Researchers had previously assumed that the mutation would be on the X chromosome because of the skewed sex ratio — it also explains why calico and tortoiseshell cats, which have patches of ...

Instead, most female cats with orange fur have patchy patterns — calico or tortoiseshell — that may include black and white. But where the mutation exists on the X chromosome, and how it gives ...

Getty Images Calico and tortoiseshell cats with mixed colourings are more likely to be female Although couched in science, the study originally started off as a passion project for Professor Sasaki.

Tortoiseshell cat Gremlin is one talkative girl and thanks to her adorably unique jaw, she maintains a sort-of “blep” expression that makes her one special lady. It’s a blessed day when @catladytails ...

The coat color comes from a genetic mutation on the X chromosome of orange, calico and tortoiseshell cats.