<human>: What's the difference between a squid and a cuttlefish?
<bot>: A squid is a cephalopod mollusk that has two long arms and two short tentacles. It can move its arms independently of each other, which allows it to swim quickly through the water. A cuttlefish is a similar-looking creature with eight arms, but they are longer than those of a squid. Cuttlefish also have two longer tentacles on their heads, which help them catch prey.