"All living cephalopods have a two-part beak;[6]:7 most have a radula, although it is reduced in most octopus and absent altogether in Spirula.[6]:7[53]:110 They feed by capturing prey with their tentacles, drawing it in to their mouth and taking bites from it.[12] They have a mixture of toxic digestive juices, some of which are manufactured by symbiotic algae, which they eject from their salivary glands onto their captured prey held in their mouth. These juices separate the flesh of their prey from the bone or shell.[12] The salivary gland has a small tooth at its end which can be poked into an organism to digest it from within.[12]"
— The wikipedia article about cephalopods (octopus, squid, etc.) provides some fuel for your nightmares. And by “your” I mean “my.”
