Saved on this device

Follow your curiosity

What discovery has been shared with you?

FACTREE gives you something interesting to discover every day — and something worth talking about together.

Start with one fact. Explore it, go deeper, then follow whichever branch catches your imagination.

Choose subjects for a surprise

Exploring any topic

Begin your discovery

Your next discovery is one click away.

Choose one or more subjects above, or leave Any Topic selected and let curiosity decide.

Biology

Ecomorphological Divergence in Anolis Lizard Toe Pad Structure

Quick fact

Anolis lizards that live on broad surfaces like tree trunks have larger toe pads with many more adhesive scales (lamellae) than those that live on narrow twigs, which have smaller pads with fewer scales.

Why this is interesting

You might think all lizards that climb trees have the same sticky feet. But on Caribbean islands, Anolis lizards have evolved toe pads so varied that you can often tell where a lizard lives just by looking at its feet. Why such a dramatic difference?