The Frog is a hostile Mob in Mechanic Miner.
Attacking or nearing the frogs will aggravate them, and cause the whole pack including the Frog Leader to attack you. The frogs move slowly, but because of it's jumping movement it's able to climb smaller vehicles.
Upon killing a Frog you will be rewarded with some experience. In addition you'll have a chance of receiving the following upon harvesting the corpse of the frog: