Across the animal kingdom, feet come in an
astonishing variety of shapes, and are equipped
with an impressive array of highly specialized
adaptations.
Some feature sturdy claws that can burrow
tunnels in densely-packed dirt. Others sport
sharp, curving talons for catching and clutching
fast-moving, squirmy prey. They may use
gripping structures to scale vertical surfaces, or
deploy venomous spikes to defeat rivals or
predators.
Whether they're used as digging tools, grasping
suckers or killing machines, animal feet can be
downright bizarre. Here are some of the most
intriguing examples.

1. Gravity-defying geckos

2. Mountain-climbing alpacas

3. Dainty rhinos

4. Scaly mosquitoes

5. Venomous platypuses

6. Two-toed ostriches