Heaviest venomous snake
- Who
- Eastern diamondback rattlesnake, Crotalus adamanteus
- Where
- United States
- When
- Not applicable
On average, the heaviest venomous snake is widely considered to be the eastern diamondback rattlesnake (Crotalus adamanteus) of south-east USA, which weighs 5.5–6.8 kg (12–15 lb) and 1.52–1.83 m (5–6 ft) in length. The heaviest specimen on record weighed 15 kg (34 lb) and was 2.36 m (7 ft 9 in) long.
The eastern diamondback is the largest species of rattlesnake (genera Crotalus and Sisturus), all of which are native to the Americas.