The Peruvian Hairless Dog, Peruvian viringo, naked dog, or Chimú dog is one of several breeds of hairless dog. It is native of Peru and it is usually raised as a pet. It has been officially recognized as part of Peru's Cultural Heritage. These dogs do not like to be alone, but when trained, can do well. They tend to know their allowed territories and respect it. These dogs are intolerant of extreme temperatures, although they are quite comfortable wearing clothing and will even play in the snow if dressed warmly. Protection against cold is necessary when the dog is not able to move around at its own speed under adverse weather conditions. Sensitivity to cold may vary from dog to dog. Smaller dogs seem to be more sensitive to the cold than their larger counterparts.