The Peruvian Inca Orchid, also known as the Perro sin Pelo del Peru, Inca Hairless Dog, Peruvian Hairless Dog and PIO, is an ancient breed dating back to the time of the Incan Empire. The breed got its name from the Spaniards who, during their conquest of Peru, found small, mostly hairless dogs curled up beside flowering orchids and called them “Perros Floras,” or “flower dogs.” Later, they became known as “Moonflower Dogs,” due to their natural preference to avoid strong sunlight (moonflowers bloom in the evening). PIOs come in two varieties: hairless and coated. Both varieties can show up in the same litter. Incan nobility let their coated PIOs roam outside during the day, while the hairless dogs usually were only let out at night, because they were (and still are) prone to becoming sunburned. Today, PIOs come in three sizes – small, medium and large - with the largest topping out at around 55 pounds and the smallest ranging from 8 to 18 pounds. Peruvian Inca Orchids are still popular in South America, as well as in warm European countries. They are also gaining fans in the United States. Both the hairless and coated varieties are charming to live with and make terrific companions. Hairless PIOs are great for people with allergies.