Noah's Ark We all know that the "animals went in two by two"… right?

诺亚方舟 我们都知道“动物都以一公一母的形式被带入方舟”…

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Much of the difference between the single-celled fungus and the two multicellular animals is accounted for by those genes and proteins that make multicellularity possible.

ECONOMIST: Genomics

Two years later they sent 15 animals by rail to the new Wichita Bison Refuge in Oklahoma.

ECONOMIST: Buffalo in America

Researchers found that when Salmon died naturally in two Northern California rivers, the fish were eaten by animals.

NPR: Fishy Vines Produce Great Wines