Ear Bite

Skill. Target touched foe takes 50...70 piercing damage and begins Bleeding for 15...25 seconds.

Touch Skill. Deals 50...70 piercing damage and inflicts Bleeding condition (15...25 seconds).

Progression
Deldrimor rank Piercing damage Bleeding duration	0 50 15 1 54 17 2 58 19 3 62 21 4 66 23 5 70 25 6 70 25 7 70 25 8 70 25 9 70 25 10 70 25

[edit] Acquisition

Ear Bite is a touch skill, not an attack. Therefore, you gain no adrenaline after use.
The damage dealt is armor-ignoring.

The name of this skill most likely refers to an incident in a boxing match in which Mike Tyson bit Evander Holyfield in both ears (and bit a piece of one off) and ended up being disqualified from the fight, and banned from the sport for a time period.
It appears that the model used in the skill icon is a male Monk in Monk Tyrian armor.