The Postal Administration of Argentina has issued the WWF stamp set consist of four stamps depicted the endangered wildlife animal i.e : Pudu (Pudu Puda), Chacoan peccary (Catagonus wagneri), vicuña (Vicugna vicugna), Pampas deer (Ozotoceros bezoarticus) on July 27, 2002.
Along with that issuance, the local WWF cover as the First Day Cover also issued with a special post mark depicted Pampas deer and shown the images of Pampas deer and Pudu Puda on the left-side cover.
Pudu (Pudu Puda) is one of two Pudu species from genus Pudu. The pudus are the world's smallest deer. This pudu range from Southern Chile and Southwestern Argentina. Pudús range in size from 32 to 44 centimeters tall, and up to 85 centimeters long. The other species of Pudus is Pudu mephistophiles .
As of 2009, both species of Pudus are classified as Vulnerable in the IUCN Red List, mainly because of overhunting and habitat loss. Pudu puda is listed in CITES Appendix I, and Pudu mephistophiles is listed in CITES Appendix II.
The pudú is a solitary animal whose behavior in the wild is largely unknown because of its secretive nature. Pudús are nocturnal and diurnal, but are mostly active in the morning, late afternoon, and evening.
Their home range generally extends about 16 to 25 hectares, much of which consists of crisscrossing pudú-trodden paths. Each pudú has its own home range, or territory.
Large facial glands for scent communication allow correspondence with other pudú deer. Pudús do not interact socially, other than to mate. An easily frightened animal, the deer barks when in fear. Its fur bristles and the pudú shivers when angered.
