The New South Wales hooker says he is proud to be named as club captain.
“It is an enormous honour to be named captain of the Bulldogs,” Ennis said.
“It is a great Club with such a proud history.
“I am truly humbled to have been considered worthy of such an honour. When you look at the names that have gone before me, even in the modern era – from Bobcat to the likes of Dr George Peponis, Steve Mortimer, Terry Lamb, Peter Tunks, Darren Britt and Steve Price – the enormity of it hits home.
“Even now, just thinking about running out at Penrith in round one next year gives me shivers. I can’t wait.
Bulldogs head coach Des Hasler added: “I think it’ll certainly add to his game and I really think that it’ll make his game better, assuming greater responsibility.