Octopus, cuttlefish and squid are all cephalopods.
http://en.wikipedia.org/wiki/Cephalopod
the octopus or a squid
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What do Cephalopods eat?
Sharks eat cephalopods
Cephalopods use their tentacles mainly to catch food.
It means literally 'eight-footed' and refers to the order of cephalopods that have eight arms with suckers on. Octopus are one example.
Nope. They are reptiles. Cephalopods are octopuses and squids and cuttlefish. Reptiles and cephalopods are not very closely related at all; cephalopods are protostomes and cephalopods are deuterostomes, and the protostome/deuterostome split occurred very early in the history of animalia.
No
no
Bivalves, univalves, and cephalopods are all types of mollusks. So are gastropods.
No. Squids and octopi are a class of mollusks called Cephalopods, and as with all mollusks, cephalopods are invertebrates.
No, they are birds.