Sphynx cats lack whiskers and eyelashes because a gene mutation affects hair growth. This mutation causes Sphynx cats to have sparse, curly hair that does not grow long or thick. It is not clear why these features are associated with hair growth in Sphynx cats, but research is ongoing to find out more about the connection.
The Sphynx is a rare cat breed that doesn't have any hair on its head or body. It is also one of the oldest cat breeds, with evidence of its existence dating back to ancient Egypt.