I think it's better cooked than raw.?? Not certain, but think so.
Most vet's actually recommend pumpkin be added into a dogs regular diet.
But like everything else you're told... everything in moderation. How big a pumpkin are we talking about? And please, don't give it to him/her all at once!
A little bit at a time...
Pumpkin is actually good for dogs and will not hurt them in small amounts. I do know it is a main ingredient in alot of the better pet foods.