A handful of mammals, including rabbits, have teeth that grow throughout their lives
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Rabbits’ teeth grow continuously, a process that may be possible due to the calcium they get by swallowing fragments of tooth as they grind their food.
A high-fibre diet means rabbits continuously chew and grind their teeth, which quickly wears them down. Growing them back requires calcium, so for years, researchers believed rabbits needed to consume a high-calcium diet.
But now, Jean-Michel Hatt at the University of Zurich in Switzerland…
