CatDog (mythical creature) is an urban Peruvian mythical creature that originates from the local areas surrounding modern day Cusco. The creature itself has been described as a small four-legged creature with the two heads; one that of a cat, or a domesticated feline, and another that of a domesticated dog. The body of the creature has been described by some as a feline and by others as a canine. Alternatively, some locals describe CatDog as a creature with a dog body and head, with a cat head protruding out from the mouth of the dog.

CatDog represents a mythical spirit that wards off unwanted and sometimes dangerous guests from the native lands surrounding Cusco. For example, many locals firmly believe that CatDog only targets non-local's, most commonly 'white people', who have little respect to the local culture and environment. It is common to leave the milk of Alpaca's or Lama's outside during a full moon to appease CatDog. CatDog is known to only inflict minor inconveniences to its targets. The most harmful cases that have been reported are minor cosmetic damages to the genitalia of tourists that have slept near the mountains surrounding Cusco; although these cases are very uncommon. Attacks in urban areas have also been heard of.