Ever talk about your friend's cat and find yourself saying "It's so cute! I mean...he's so cute. Or she? I don't know, but it's cute." Well, we've got a little tip for you: If the cat has two colors, go with "she."
In The Genes
The Exception to the Rule
Why Calico Cats Are Almost Always Female
Key Facts In This Video
The X chromosome from a male cat's mother determines his fur color, but in females, the X chromosomes from both parents take turns determining fur color. 00:50
The tri-colored calico coloring with white happens due to a gene unrelated to the X and Y chromosomes. 02:09
A male calico cat can have tri-colored fur if he inherits an extra X chromosome, making his genetic makeup XXY. In humans, this condition is known as Klinefelter Syndrome. 02:26
Why Cats Are Good For Us
The Weird, Gross and Beautiful Things About Your Cat
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