Louis the octopus clearly thinks two heads are better than one when it comes to toys.
The 1.8m-wide (6ft) creature is so attached to Mr Potato Head that he turns aggressive when aquarium staff try to remove it from his tank.
The giant Pacific octopus was given the toy for Christmas and has even learned to dig out food hidden in a secret box at the back of it.
‘He’s fascinated by it,’ said Matt Slater, of the Blue Reef Aquarium in Newquay, Cornwall. ‘He attacks the net we use to fish the toy out every time we try to take it away.’