[5] Their fawns are not spotted at birth, which separates them from the best known western population of the Indian hog deer (A. porcinus).

They were ascribed to tigers, deer, macaques, bearded pigs, small mammals, lizards, snakes and turtles.

[6][7][8] Using the work of Von den Driesch,[9] all chosen anatomical features of appendicular elements' anatomical features which were chosen, besides molars, were measured to distinguish between taxa that had close relationships, and see morphometric changes over ages, though not for pigs or deer.

One 'large' and one 'small' taxon can be easily differentiated by the significant change in size observed in the postcranial elements and dentition.

[3] From comparisons of the mesial-distal and labio-lingual measurements of individual fossil teeth and mandibular toothrows with those of surviving deer taxa in the Philippines and other Southeast Asian islands, it appears that the Calamian hog deer is most plausible candidate for the small taxon.