Just because an animal has a base-model brain and can't regulate its own body temperature doesn't mean it's unintelligent. Recent news shows two cold-blooded animals, a fish and a lizard, cleverly solving problems--and giving us brainier animals reason to question our superiority.
Swimming back from a 60-foot dive in the Great Barrier Reef, a diver "heard a cracking noise" and turned to see a fish exhibiting a surprising behavior. The fish was a black spot tuskfish, also called a green wrasse, and it was holding a cockle in its mouth while hovering just above a rock. While the diver snapped pictures, the fish spent well over a minute rolling its body side to side and whacking the shellfish against the rock's surface. Finally, the shell broke, leaving its inhabitant available for eating.
Though there have been reports of fish smashing food against coral or rocks before, no one's documented this ...
