Zig and Wikki are extraterrestrial best friends whose adventures on Earth teach them (and young readers) much about the natural world. In The Cow, the dynamic duo lands in the center of a farm ecosystem. An argument forces the friends to separate, but they're brought back together inside a cow's stomach! With facts and photos displayed on Wikki's screen, they learn that everything on Earth is symbiotically connected - just as their own friendship is.
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