The top ten posts of the week on TreeHugger, from bike generators to octopuses

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Australia penguins and sheep dogs

credit: AU GOV

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Sheepdog 'bodyguards' protect endangered penguins from foxes, saving them from extinction

This is clever. Very clever. Sheepdogs are bred and trained to protect sheep against wolves, but that doesn't mean that their skills can't be used to protect different animals against other species of predators.

Sheepdog 'bodyguards' protect endangered penguins from foxes, saving them from extinction