But this cheered me right up:

Octopuses are finding discarded coconut shells and toting them around as makeshift shelters.  This makes them, officially, the first tool-using invertebrate.

You seriously gotta see this:



If you listen veeeery closely, you can hear the little octopuses say, "A HOME, AH HAZ WUN" as they toddle about with their widdle shells.

(Link and vid both ganked from jaune_chat.)