Fact about harvesters: for those that are delivered to Russia, the cabins are reinforced, and over the hill the cabins are not reinforced.

Well, what, in Russia, safety precautions are not honored as much as abroad.At one time, they showed me how to cut rails with an ordinary chisel on the handle and much smoother.

The harvester has a hydraulic saw, not a chainsaw, I work with a Komatsu931 harvester.

At least once they would show  who changes the teeth, sharpens the crowns Probably disposable Like museum exhibits.I won’t even google about a medium sized elephant, boy, even the largest bulls weigh up to a ton.

Hippos are more than 2 tons, elephants weigh a little more if they are African, although you did not specify. Indian ones are also many times more.