Question

why can a lizard walk easily on walls

Answer 1

Answer:

Lizards have a large number of very tiny hairs on the pads of their feet called setae. ... These tiny pads therefore drastically increase the surface area and come in intimate contact with the surface on which the lizard is crawling, so the Van der Waals forces kick in.

Answer 2

Lizards have pads on their feet.Thus while walking or running on horizontal or vertical walls, a lizard curls and uncurls its toes thus creating a suction pressure which enables it to cling on to the walls.