This World Octopus Day, prepare to be dazzled by the uncanny 'squeezability' of these sly cephalopods. In a video recently released by Octolab, a captive octopus named Arnold can be seen squashing his lithe body through a tiny slit in his tank to get at a treat on the other side. The four-pound (1.8-kilogram) octopus manages to successfully squeeze himself through a gap that is just 0.79” (2cm) wide.

Octopuses are able to carry out these impressive feats of shapeshifting thanks for a very squishy, boneless body. Aside from their beaks, octopuses have no solid body parts. This allows them to contort their bodies in a magnificent fashion – if the beak fits, the rest probably will too. And if that’s not impressive enough, each sucker on an octopus's arm is loaded with as many as 10,000 neurons allowing it to taste and feel independently with each appendage. Even a surgically removed octopus arm can perform basic motions like grasping and reaching.

Arnold was eventually defeated by a 0.7” (1.7cm) wide gap, but he was still able to figure out a way to get at the treats. He put on a show of octo-strength, and brute force proved effective in removing the barrier. Good on ya, Arnold.