Conservationists say poachers pull out their teeth - as the primates have a toxic bite - with pliers, making it impossible for them to return to the wild.

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As part of the operation, doctors had to pull out his front teeth, Kelly said.

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In other displays, men used their teeth to pull cars, lift bicycles and balance plows.

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The two men only survived because Coxwell, whose limbs were also paralysed, used his teeth to pull the rope to vent hydrogen from the balloon.

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He was also confronted by 64-year-old Valerie Holsworth, from Scarborough, North Yorkshire, who said she had to pull out her own teeth while waiting to register with an NHS dentist.

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It was actually worse than pulling teeth because most of the time we had to fabricate the teeth and then pull them.

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