Male calicos are the unicorns of the cat world. Only females carry the chromosomal combination needed for the calico pattern, but every now and then, a male cat will develop an extra chromosome ...

While the adoption story of Josie is heart-warming, the cat unexpectedly turned out to be a biological male with XXY chromosomes. Calico Cats usually have beautiful and unique tri-color patterns.

From Tama, Japan's most famous stationmaster calico cat, to the lasagna-loving, ginger Garfield, cats with orange fur are ...

Calico cats do have a strong tendency to be female, and male calicos are rare — but not impossible. This is because the ...

Rarely, a genetic mutation can result in a cat being born with an extra chromosome (XXY), leading to a male calico or tortoiseshell cat, but for the most part, it’s purely a ladies’ club.

Scientists from Kyushu University have identified the long-sought “orange gene” behind ginger fur in domestic cats—a deletion ...

Another fun fact: Nearly all calico and tortoiseshell cats are female because this orange mutation is found on only one of their X chromosomes. Finally, any male calico or male tortoiseshell cat ...

Scientists believe a gene mutation produces more orange fur in males and may also explain their friendly nature ...

Researchers have discovered how orange cats got their coats — and why so many of them are male. The coat color comes from a genetic mutation on the X chromosome of orange, calico and ...