How many 'canine teeth' does an adult human have?
4
The correct answer is 4.
An adult human has 32 permanent teeth, arranged as 16 in each jaw. In each quadrant (half-jaw) there are:
- 2 incisors — for cutting food,
- 1 canine — for tearing food,
- 2 premolars — for crushing food, and
- 3 molars — for grinding food (including the third molar or wisdom tooth).
With one canine per quadrant and four quadrants, the adult mouth contains a total of 4 canine teeth — two in the upper jaw and two in the lower jaw. So the correct number is 4, not 2, 3 or 8.
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