The Zoologist's Guide to the Galaxy: What Animals on Earth Reveal About Aliens—and Ourselves

This delves into what alien life might be like, based on the universal scientific principles that govern life on Earth and could apply to other planets. Moving beyond science fiction, it uses Darwin's theory of evolution to hypothesize how extraterrestrial creatures might evolve, move, communicate, and socialize. For example, creatures might communicate electrically, as some Earth fish do, or have no symmetry if they evolved in different environments. This imagines a variety of possibilities, from supersonic animals to alien languages based on scent. Drawing on the latest scientific knowledge, it offers a realistic approach to understanding how life could exist and function on distant worlds.

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