Player's fist deals incorrect damage

The player's fist deals 2 damage (one heart) instead of 1 damage (half a heart) to mobs. This can be replicated easily. Just attack a cow. Cows have 10 health (5 hearts) and the player's fist deals one heart of damage so cows are killed with 5 hits with the fist. If the player's fist dealt a half a heart of damage it would take ten hits to kill a cow (like it should) and the game would also be more challenging as monsters are currently too easy to kill with your fist. Please have the damage changed. Playing on iOS 0.12.1.