useless trivia: What Word Means: Not To Bud?

Questions

Surviving all dangers, a wild ---------- may live up to 20 years.?

To a human, one giant octopus looks virtually the same as any other of the same size and species. This explains why divers claim to have seen the same octopus occupy a den for ten or more years. But an octopus seldom lives longer than ----------?

The ---------- is the only bird that can swim, but not fly. It is also the only bird that walks upright.?

To survive, most birds must eat at least half their own weight in food ----------?

The ---------- is a little-known burrowing South American animal that is related to the armadillo, but is smaller in size. The ending of the animal's name is derived from the Spanish ciego, meaning "blind."?