![]() ![]() They can either be short-haired or long-haired, and the color patterns can vary from very dark to very light. These cats often have a mottled or brindled coat. Unfortunately, male cats with XXY Syndrome are sterile and often have serious health issues, resulting in significantly shorter lifespans than female torties. The color can include black, orange (red), brown, black, cream, cinnamon, and blue. ![]() In 2014, a Scottish cat rescue welcomed tortoiseshell kitten Harry into the fold-a feat so rare it made the news. In very rare cases-about 1 in 3,000-a male tortoiseshell cat can be born with two X chromosomes and one Y chromosome. The embryo shuts off one X chromosome in each cell, resulting in orange and black color variations in their coats.īecause a male cat has one X chromosome and one Y chromosome, he'll only be orange or black-not both. The female sex chromosome (X) also carries the genetic code for orange or black coat colors the male sex chromosome (Y) does not carry information on coat color.īecause females have two X chromosomes, they have two sets of genetic information that can determine their coat color. That's because the same chromosomes that determine their sex also determine the colors in their coats. This means you can get calico cats with brown, cream, blue-black, and red coloring. Like calico cats, you'll find most tortoiseshell cats are female. Tortoiseshell and calico cats have a great deal in common. Calico cats are generally orange, white, and black, but multiple color variations are possible. ![]()
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