Zevahim 116: To Keep the Seed Alive
Which animals were allowed to be sacrificed altogether? Male, female, blemishes and not, etc. But what about a treyfa (an animal that was going to die within the year)? Plus, the Gemara probes the implications from this status to the animals that boarded Noah's ark. Distinguishing between "clean" and "unclean" animals may have been unclear before the giving of the Torah, but they could derive which animals were kosher and not by virtue of how many of each was saved on the ark (7 for the kosher animals, even if they didn't yet know that they would be "kosher" animals). Also, the Gemara eases…
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