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WHAT COUNTS:

Revived animal must be mostly healthy, be able to walk around and eat. If it's a hybrid with living species, it should also be fertile so that genetic similarity can be brought higher with future generations.

Efforts such as the Quagga Project that use selective breeding to produce animals similar in appearance but not based on original genetic material won't count for this question.

If it will turn out that an animal is not in fact extinct, that option will resolve N/A.