Largest dog ever
- Who
- Hayden’s bone-crushing dog (Epicyon haydeni)
- Where
- Not Applicable
- When
- 01 January 0001
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.