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  • Print publication year: 2021
  • Online publication date: February 2021

3 - Extra-Legged Frogs

from Part I - Frogs


The abnormal animal featured here is a frog with extra legs. It grew the extra legs because it was infected with a parasite when it was a tadpole, and the parasite caused the growing leg to split into pieces. A similar thing happens in a fly that also has extra legs, except that there there's no parasite, just necrosis.

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