In infants, the primary canines typically appear between 16 to 20 months of age.

The mesiodistal length of the crowns is the same size as the inciso-cervical length.

The distal cusp ridges of the maxillary canines (C, H) are shorter than the mesial cusp ridges.

The cusp of the mandibular canines (R, M) can look pointed. 

The distal cusp ridge of the mandibular canine is longer than the mesial cusp ridge.