Because nature is weird, and I like science fiction, which is the real creature, and which is the fictional critter?

Critter #1 is 1 mm long critter that:

• Can survive in space and at the bottom of the Mariana Trench
• Contains a set number of cells in its body
• Can be rehydrated after over a century
• Can survive thousands of times more radiation than a cockroach

Critter #2 is a bird that:

• The males deliberately sets fires as a mating ritual
• The males perform this ritual in pairs, in case one catches fire
• After the fire spreads, the fires leave masses of cooked meat. The birds scrape off their meals with their distinctive, blade-like beaks

So… which critter is real, and which is not? For bonus points, in what book did the fictional critter appear?

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