According to the FCI breed standard, the most important aspect of its appearance is its hairlessness. The dog may have short hair on top of its head, on its feet, and on the tip of its tail. In Peru, breeders tend to prefer completely hairless dogs. The full-coated variety is disqualified from conformation showing. 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.
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