106
Komodo dragons have iron-coated teeth, scientists find | Reptiles | The Guardian
(amp.theguardian.com)
General discussions about "science" itself
Be sure to also check out these other Fediverse science communities:
Beavers keep growing their yeeth indefinitely too due to being rodents, but the iron buildup probably helps the teeth wear a bit slower.
The iron content in beaver teeth is concentrated at the front surface so that they are self-sharpening as they wear down.