Squids use their tentacles to catch other animals. The tentacular clubs at the end of their tentacles are covered with sharp suckers that latch onto prey. Once a squid has nabbed its quarry, it holds the animal captive with these clubs and its suction-cup-lined arms. With its hapless victim immobilized, the squid draws the animal toward the pinnacle of its limbs, where its mouth is. A squid's mouth resembles a parrot's beak -- sharp, curved, chitinous, and pointed -- which it uses to nip off chunks of the prey sized for swallowing. Inside the squid's mouth is a radula, a tonguelike organ covered in rows of tiny grinding teeth, that helps the squid further break down its food. The squid needs to take its meals in pieces because the esophagus actually passes through the squid's brain within the head.