The Peterbald cat’s triangular head is actually a feature of their genetics. This cat breed was originally obtained by breeding Oriental Shorthair cats with Downs Hoy cats (both of which have a diamond shaped face). This particular head shape not only makes Peterbald cats unique in appearance, but also plays a positive role in their physiological functions such as vision and hearing. The slanted eyes help them to focus better, and the large ears make them especially sensitive to movements in their surroundings. Therefore, the Peterbald cat’s triangular face is not only part of their unique charm, but also an important element of their survival skills.