Canterbury coach Kevin Moore has quit the club with immediate effect.
Moore was earlier told by Bulldogs bosses that his services would no longer be required beyond the end of the season.
Bulldogs chief executive Todd Greenberg said Moore was within his rights to walk out.
“Kev has been great for our club over a forty year period across a number of roles, from ball boy to head coach. However with regard to the head coaching position it had become clear that it was time for a change,” he said.
“It’s an incredibly hard position for us all to be in given Kev’s standing within the Club and we are certain his contribution over a lifetime – not just his time as head coach – will be given due recognition by all Bulldogs supporters.
“Kev should be commended for making what is an incredibly tough decision for him professionally and personally.
“He was a major part in the Club’s turnaround over the past three years both on and off the field and his contribution will be remembered fondly by all those who have worked with him.”
Moore’s assistant Jim Dymock has been appointed as caretaker for the remainder of the 2011 NRL season.