Octopus

For an invertebrate, that is, an animal without a backbone, the octopus is clever. Their intelligence is comparable to that of a cat. Octopi are truly masters of disguise! As well as being able to change colors, they can also change the texture of their skin allowing them to almost completely disappear into their surroundings. Additionally, because they have no bones they are able to contort their bodies through very small spaces.

Octopus Camouflage

Octopus Fitting Through a 1" Hole