Blue whale lower jawbones form an arch in front of the Anglican Church, Stanley, Falklands, UK Overseas Protectorate, South America

The town of Sisimiut as seen through whale jawbone arch, Western Greenland, Polar Regions

Whale jawbone archway to church in Sisimiut, Greenland, Polar Regions

Eight-inch tooth from lower right mandible (jawbone) of an adult bull Sperm Whale (Physeter macrocephalus) in the mid-riff region of the Gulf of California (Sea of Cortez), Mexico.

CT with an eight-inch tooth from lower right mandible (jawbone) of an adult bull Sperm Whale (Physeter macrocephalus), Gulf of California (Sea of Cortez), Mexico

Eight-inch tooth from lower right mandible (jawbone) of an adult bull Sperm Whale (Physeter macrocephalus) in the mid-riff region of the Gulf of California (Sea of Cortez), Mexico.

CT measures (9'8") the lower right mandible (jawbone) of an adult bull Sperm Whale (Physeter macrocephalus) in the mid-riff region of the Gulf of California (Sea of Cortez), Mexico. Model released.

Adult brown bear (Ursus arctos) chewing on humpback whale jawbone at Scidmore Cut in Glacier Bay National Park, Alaska, USA

Doctors examining x-ray of skull and jaw on digital tablet

Bengal tiger (Panthera tigris tigris), lying in tall grass, yawning, showing tongue and teeth, Bandhavgarh National Park, Bahannara, Manpur, Madhya Pradesh, India

Yacare Caiman (Caiman yacare, Caiman crocodilus yacara), Pantanal, Mato Grosso do Sul, Brazil, South America

Spectacled caiman (Caiman crocodilus yacare), open mouth with leeches, animal portrait, Pantanal, Mato Grosso, Brazil, South America

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