Evolution doesn't care about ethics - it cares about surviving and getting your alleles out there as much as possible. From that perspective, cannibalism can seem like a pretty good idea to some creatures. Hank introduces us to three different types of animal cannibalism, and tells us about some of the species that practice them.
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Tagged under: scishow,science,biology,animal,cannibal,cannibalism,hank green,evolution,eat,shark,sand tiger,oophagy,adelphophagy,embryo,pup,sexual cannibalism,australian redback spider,filial cannibalism,intrauterine cannibalism,caecilian,amphibian
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