Guinness World Records - Officially Amazing

Largest dog ever

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For the record

  • Who: Hayden’s bone-crushing dog (Epicyon haydeni)

  • What: Largest dog ever

  • Where: Not Applicable

The largest wild dog of all time was Hayden’s bone-crushing dog (Epicyon haydeni). Estimated to weigh up to 170 kg (374.8 lb), it existed for 15.3 million years during the mid-late Miocene epoch in North America.


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