What specific anatomical trait allows the vicuña to continuously maintain adequate grinding surfaces while consuming tough, abrasive grasses?
Answer
Continuously growing lower incisors
The vicuña possesses lower incisors that grow continuously throughout its entire life, a trait similar to those found in rodents. This adaptation is essential because the high-altitude puna grasslands provide only tough and abrasive vegetation that wears down teeth at an accelerated rate. By having teeth that never stop growing, the vicuña ensures it maintains the necessary dental structure to grind and process the sparse, hardy vegetation of its high-altitude environment.
Related Questions
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