Rodents' Thumbnails: The Secret to Their Global Domination

TL;DR Summary
A study published in Science reveals that most rodents have thumbnails instead of claws, which may have contributed to their evolutionary success by enabling better food manipulation, particularly for handling nuts, and this trait has been conserved across their family tree, helping explain their widespread diversity and dominance.
- Most rodents have thumbnails instead of claws: It might help explain how they took over the world Phys.org
- What rodent thumbnails tell us about their (evolutionary) world domination The Washington Post
- Rodents’ secret weapon? Thumbnails. Popular Science
- Tiny thumbnails may be key for rodents’ global takeover Science News
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