Heaviest gun that a person can actually carry, with normal human strength (Ok, maybe SOME steroids) is an A-134 gatling gun. The largest gun ever, period, is an M-102 Howitzer. It's a stationary gun installed in AC-130 gunships, and other very large military vehicles, fires off 102 mm shells. Enough explosive force to bring down half a block.
I think the heaviest kid in the world is Jessica
The second heaviest bird in the world is the Southern Cassowary.
Humpback Whales are not the heaviest whales in the world but there one of the heaviest whales in the world they would get a 3rd place on weight
Assuming that you mean small arms it is the 30 cal Gatling gun
The African elephant is the world's heaviest land mammal
SW - This can't be true! What about all the other whales? The second heaviest animal in the world is an African elephant, The heaviest being a Blue whale at 190tonns
The world largest and heaviest animal is the Blue whale weighing in at 418,878 lbs (190,000 kg)
The blue whale. The heaviest blue whale measured at about 418,878 pounds.
The Capybara
Bible
Anaconda
The anaconda is recognised as the heaviest species.anaconda is the heavies species of snake in the world