Inter-Canine Distance
Definition
The distance between the tips or contact points of the upper canine teeth on each side of the arch. This measurement differs substantially between species: approximately 28 to 35 mm in adult humans, 40 to 60 mm in medium to large dogs, and much wider in large cats. Inter-canine distance is a primary discriminator.
- Human adult range
- Approximately 28 to 35 mm
- Medium/large dog range
- Approximately 40 to 60 mm
- Measured between
- Tips or contact points of upper canines
- Role
- Primary discriminator in bite mark cases
Common questions
Why is inter-canine distance considered a primary discriminator rather than a definitive one?+
Ranges for humans and animals overlap at the margins, and skin distortion during biting can stretch or compress the apparent mark, so the measurement narrows the field of possible biters rather than confirming a single species or individual on its own.
What can distort inter-canine distance measured from a skin bite mark?+
Skin curvature over the bitten body part, the elasticity of the tissue, and post-injury swelling can all expand or shrink the apparent distance between canine marks compared to the biter's actual dental arch.
Related terms
- Avulsive Wound
- A wound in which tissue is torn away rather than cleanly cut. Dog and large-cat bites frequently create avulsive wounds through a...
- Carnassial Teeth
- The large, blade-like shearing teeth (upper fourth premolar and lower first molar in dogs and cats) that carnivores use to slice through...
- Perimortem
- At or around the time of death. Distinguishing perimortem predation injuries (which may indicate a cause of death) from postmortem scavenging (which...
- Puncture Wound
- A wound where a pointed tooth penetrates tissue to create a hole with a relatively small surface opening and a deeper track....
- Scavenging Artefact
- Marks, wounds, or tissue removal caused by animals feeding on a body after death. Scavenging artefacts can alter or destroy existing wounds...