Dennis and his wife have farmed in the Elmwood area for over 30 years. The have a 600 commercial ewe flock and a 40 cow-calf beef herd. They also grow hay, corn and mixed grain for their operation.

Dennis was elected to the AAC board in 2016, as one of two Livestock representatives. He is also a director on the Canlead Solutions board, AAC's sister organization. Since 2019, he has served as the Treasurer of the AAC board. Dennis previously served as Chair for the Ontario Sheep Farmers and a director-at-large for the Canadian Sheep Federation’s Finance Committee.