The Himalayan Guinea Pig derives its name not from the Himalayan mountain range but from its resemblance to the color-pointed pattern found in Himalayan cats and rabbits—a pattern more commonly associated with Siamese cats. This distinctive variety features temperature-sensitive pigmentation that produces dark coloration on cooler body extremities while leaving the warmer body core white.
Within the cavy fancy, Himalayan Guinea Pigs may be referred to as Himalayan Cavies, Color-Pointed Guinea Pigs, or occasionally "Siamese Guinea Pigs" due to their visual similarity to Siamese cats. The scientific name Cavia porcellus applies to all domesticated guinea pig varieties, with "Himalayan" specifically describing this unique color-pointed pattern.
The Himalayan pattern is recognized by guinea pig registries worldwide, with specific standards regarding point color intensity, body color purity, and marking placement. Two color variations are commonly recognized: Black Himalayan (with black nose, ears, and feet) and Chocolate Himalayan (with brown points). The genetic mutation responsible for this pattern affects tyrosinase enzyme activity, making pigment production temperature-dependent—a fascinating example of how genetics and environment interact to create appearance.

