Some spiders can stick to walls because their feet are covered in tiny, flexible hairs that create an attractive force with a dry surface. In theory, there could be spiders as large as cats scaling walls, but they would need to have really enormous, broad feet.

Advertisement

This seems unlikely, as evolution has never produced a body plan like this. Plus, there are other constraints that limit a spider’s body size, such as its inefficient respiratory system.

Asked by: Pad Scalon

Read more:

Advertisement

To submit your questions email us at questions@sciencefocus.com (don't forget to include your name and location)

Authors

Helen Pilcher
Helen PilcherScience writer, presenter and performer.

Helen Pilcher is a tea-drinking, biscuit-nibbling science and comedy writer, with a PhD in cell biology.

Advertisement
Advertisement
Advertisement