The animal you are referring to is not actually a deer. It is a semi-aquatic antelope, cetaformia anthalopus. Although sightings are rare, they are not unprecedented. This shy and beautiful animal inhabits the rapidly disappearing rain forests of Cambodia and has only once been collected. A partially devoured carcass was obtained from a Khymer Rouge commander by zoologist and former member of Students For A Democratic Society, Dr. J. Walden Pond (yes, his real name)in 1975. The preserved remains can be seen at the Berkeley Museum of Natural History by appointment with the Director of Special Collections, Dr. Stephanie Alderton. You can contact her at salderton@ucberkeley.edu.