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two headed sharks are caused by overfishing. they mostly happen in the blue shark species between all of the 510 species alive and the blue shark can carry 125 pups at a time which makes the shark viviparous (Vive-iper-is).

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βˆ™ 7y ago
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βˆ™ 4mo ago

Some animals have two heads due to genetic mutations during development that cause the formation of extra heads. This can happen when the cells responsible for forming the head region don't divide properly. While having two heads may look unusual, it often leads to challenges in functioning and survival for the animal.

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βˆ™ 16y ago

Genetic mutations in their genes.

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Q: Why do some animals have two heads?
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