The NHL has suspended Los Angeles Kings winger Brendan Lemieux for 5 games ... after the league ruled he did, in fact, bite his opponent last weekend.
Lemieux was involved in a scrum with Senators star Brady Tkachuk last Saturday at Staples Center ... when, at one point, Tkhachuk accused the L.A. player of ripping into his hand with his teeth.
Video from the play shows Tkachuk was pissed over the incident -- showing his bloody hand to refs and screaming, "He f***ing bit me!