LOLWOT, Tiny Fox Lab

Compared with octopuses living in tanks full of interesting decor like shells and flowerpots, octopuses living in more spartan conditions become pretty stressed out, one study found. Some even turn to a disturbing behavior known as autophagy, or eating their own appendages, in such non-stimulating environments. – Tiny Fox Lab Facts

Preview photo credit: LOLWOT
Source: https://www.livescience.com/41924-smart-octopus-facts.html