Add Yahoo as a preferred source to see more of our stories on Google. A Texas angler caught a South American piranha relative with "human teeth" at a local lake Sunday. The a-pacu-lypse is upon us. As ...

Piranhas belong to a family of bony fish characterized by highly developed dentition. They’re cousins to the pacu fish, which has dentition eerily similar to human teeth. Unlike pacu teeth, which are ...

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Losing a tooth is tough. If we lose the small living structures that help us chew our food, we're left with the options of replacing them with dentures or implants that can be costly. Beyond that, ...