We have a cat named Owl (actually, Owl Turnip, but that’s another story), and she has been designated the official mascot of Ratioscientiae.com! Owl appears here under her professional name, Science Cat. Owl was picked of the streets, so she is not of a particular breed, but she is a calico cat. A calico is not a breed of cat. A calico is a cat with a fur coat that has 3 colors (white, black, and orange). The unique color of the fur of the calico is coded for by genes present in the X chromosome, and it only manifests itself in the phenotype when two copies are present. Therefore, only females, which are XX, have the calico color. There are some male calicos, which in most cases arise as a result of a chromosomal aberration (they are XXY), and they are sterile. Owl also has stripes on one side of her body, which makes her a tabby cat. The calico cat is the official cat of the state of Maryland where Owl resides.
Note: the photo belongs to the author and can only be used with permission.