TORONTO — Character actor Maury Chaykin, best known for his pivotal role in “Dances With Wolves,” died July 27 in Toronto, his manager wouldn’t divulge the cause of death. It was his 61st birthday.

Earlier in the day the Toronto fest had announced it will screen the world preem of “Casino Jack,” helmer George Hicklooper’s biopic about lobbyist Jack Abramoff, in which Chaykin plays a supporting role. The veteran thesp starred in the recently renewed HBO Canada comedy “Less Than Kind,” and had a sporadically recurring role in HBO’s “Entourage” as volotile movie producer Harvey Weingard.

Chaykin, who was born and educated in New York but resided in Toronto for many years, portrayed Major Fambrough in Kevin Costner’s 1993 drama “Dances With Wolves.” In a long career, he also had starring turn as Detective Nero Wolfe on the A&E series. Other memorable character perfs include spins in “War Games” and “My Cousin Vinny.”

Chaykin was ubiquitous on Canadian screens, winning the Genie actor award for the 1994 film “Whale Music” and appearing in dozens of top films and TV series.

He is survived by his wife, actor Susannah Hoffmann, and daughter Rose.