Ferocity

is a damage stat that increases the chance of attacks hitting multiple times.

The maximum number of hits per second with and  can be calculated using this calculator:

Mechanics
Each point of grants a +1% chance for an attack to strike an extra time. For example, with 50 it grants the player a 50% chance for their attack to hit twice. above multiples of 100 also allow for extra triggers, meaning above 100 allows your attack to strike three times, and so on. For example, 250 would grant a 100% chance to strike three times, and a 50% chance to strike a fourth time.

works on melee and arrows, but not magic.

is always visible in player's stats tab.

does not activate or.

When using melee weapons, fails to activate when the player is more than 6 blocks away from the target.

Increasing Ferocity
Note: The Tiger Pet gives up to +30% multiplicative and +25 additive.

Trivia

 * Killing an Enderman with a strike causes its death sound to not play.