Lagomorphs have an extra pair of incisors located outside the front incisors. This distinguishes them from most rodents. Which option best describes this feature?

• A. A canine pair at the front
• B. No incisors
• C. The extra pair of incisors outside the front incisors
• D. Fused molars only

Answer: (C)

Lagomorphs have a distinctive dental layout: in the upper jaw there is an extra pair of incisors tucked behind the front incisors, often called peg teeth. This creates two rows of upper incisors, a feature that sets them apart from most rodents, which have only the single pair of upper incisors and no peg teeth. The description that there is an extra pair of incisors behind the front incisors best captures this characteristic. The other options don’t fit because they imply canines at the front, a complete lack of incisors, or only fused molars, none of which describe the lagomorph dental arrangement.