Corpse of this woman was found at a site of black magic rituals. She had traces of rat poison inside her mouth but it is not known whether she committed suicide or was sacrificed.
Her corpse was left out in the open and that attracted hungry dogs that munched on her face. From the photos it looks like she had really healthy teeth and gums. It happened in Brazil.
Props to Best Gore member drccoco for these great quality, high res pics: