While the adoption story of Josie is heart-warming, the cat unexpectedly turned out to be a biological male with XXY ...

Some cats get all the rizz and they know it. Josie, a rare male Calico polydactyl cat, seems to be very aware of the fact that his existence is a blessing to anyone who lays eyes on him ...

Conversely, calico or tortoiseshell cats are usually female – the female’s extra X chromosome allows the possibility of her receiving both a black and orange gene. 1.

One lucky street cat finds his furrever home in this adorable new cat manga! Mocha is a male calico cat—an extremely rare combination said to bring good luck. Abandoned on the streets as a ...

A massive 3-D mikeneko (calico cat) has found a new lair on a screen set up on top of a building across from the station. The feline, a moving image projected on a 120-square-meter advertising ...

A prime example of X inactivation is in the coat-color patterning of tortoiseshell or calico cats (Figure 1). In cats, the fur pigmentation gene is X-linked, and depending on which copy of the X ...