Octopus is also known as Devil Fish just because previous people thought it to be impulse as it is weird looking and indifferent.
Yes, octopus is a noun. All animal names are nouns.
octopus
other octopus.
blue ring tail
Octopus octopus's have 8 tenticals because their names have oct as in eight like a octogon has eight sides so it has 8 tentical hope this helps by dakoda
octopus, ocelot, orca,
hippocampus, wampus, octopus, platapus
A shark or other big fish eat a octopus.
The octopus.
A 'octopus's' predator for example large fish and other predators
Whales eat octopus [sperm whales have giant octopus as a favorite food]. Octopus eat each other octopus. Humans eat octopus. Anything that can catch an octopus (that isn't easy) will eat it. Killer whales [or Orcas, a kind of toothed whale] eat octopuses.
Octopus communicate with each other by the movement of their body and the change of body colors.