are all orange cats male

Not all orange cats are male, but approximately 80% of orange cats are male. The genetics behind cat coat color is linked to the X chromosome. Male cats have one X and one Y chromosome, so if they inherit the orange gene on their single X chromosome, they will be orange. Female cats, with two X chromosomes, need to inherit the orange gene on both X chromosomes to be fully orange, which is less common. Thus, most orange cats are male, but female orange cats do exist, though they are less frequent.