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ABSTRACT 

This paper is the result of the study of some pieces associated with canids, from the collections under protection in the National Museum of Costa Rica. Two dentaries were measured with teeth that were preserved and compared with reference collections from the Paleozoology Laboratory of the Institute of Anthropological Research of the National Autonomous University of Mexico, identifying one as part of Canislupus familiaris and the other one to Urocyon cinereoargenteus. According to reports,the first one was associated with Pleistocene megafauna, tentatively assigned to the terminal phase, that is, over ten thousand years old. Three zoomorphic pieces associated with pre-Hispanic cultures, whose antiquity was located between 300 and 800 years before the present, were also reviewed, defining one of them as the representation of a hairless dog. The study makes it possible to provide new and relevant data regarding the passage of the dog on its journey across the continent at the end of the Pleistocene and also to recognize the presence of hairless dogs in the area probably a millennium ago.