I am not stealing anything but I want wikipedia to take all the credit (for their copyright) anyways this is the answer and read more on the link below for more information but this should explain "What is a cephalopod?", so here it is.
They are an invertebrate in the phylum Mollusca meaning "soft bodied" (Mollusks). The class Cephalopoda means "head foot", meaning their arms and tentacles come from the head. All of their internal organs are cased in the soft section of the body called the mantle. There are actually 4 types of cephalopods: squids, octopuses, cuttlefish, and nautiluses. Each are unique in their own ways. For instance the nautilus is the only cephalopod that does not hunt. They are found in all oceans.
Read more: What_is_a_cephalopod
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fish cats and cows
Octopuses,
Phylum: MolluscaClasses:AplacophoraPolyplacophora Chiton and limpetsMonoplacophoraBivalvia clams and oystersScaphopoda tusk shellGastropoda snails and slugsCephalopoda octopus and squid
What do Cephalopods eat?
Sharks eat cephalopods
Cephalopods use their tentacles mainly to catch food.
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
No. Squids and octopi are a class of mollusks called Cephalopods, and as with all mollusks, cephalopods are invertebrates.
Octopus, cuttlefish and squid are all cephalopods. http://en.wikipedia.org/wiki/Cephalopod
Bivalves, univalves, and cephalopods are all types of mollusks. So are gastropods.
No, they are birds.