A man is able to continue fighting despite having his ear bitten off, and in fact is dominating the fight when the video ends.
Maiming does not necessarily lead to incapacitation and may not discourage your opponent. It may in fact escalate their aggression and the level of force they consider using.
Two main things to note here:
- Biting is possible at any time a grip is established and from any range and position, and it can happen very quickly;
- Despite having about one third of his lower lip bitten off, the victim of the bite was willing to continue fighting. It was the biter who stepped back, put his palms up then walked away. Biting does not incapacitate and will at best discourage.