Human: What is the difference between an octopus and squid? Assistant: 
An octopus is a cephalopod, while a squid is a mollusk. They are both marine animals, but they are very different in appearance, behavior, and habitat. Octopuses have eight arms and two eyes, while squids have ten arms and one eye. Octopuses live on land as well as in the ocean, while squids are only found in the ocean.