Which mammal group is most associated with selenodont teeth?

• A. Primates.
• B. Ruminants such as deer, cattle, and goats.
• C. Carnivores.
• D. Elephants.

Answer: (B)

Selenodont teeth are the molar pattern with crescent-shaped enamel ridges that form broad, curved grinding surfaces. This design is especially well suited for breaking down tough, fibrous plant material, which is exactly what ruminants do when they chew and grind grasses and leaves. Deer, cattle, and goats rely on these crescent ridges to efficiently shear and grind cellulose as part of their digestion, often after regurgitating and re-chewing food. In contrast, other mammals shown—primates, carnivores, and elephants—have different tooth shapes and wear patterns better suited to their diets (sharp tearing teeth in carnivores, different grinding patterns in primates and elephants), so the selenodont arrangement is most characteristic of the ruminant group.