My friend (who really isn't a fan of Enterprise) says that the dog who played Porthos was the only good actor in the whole series.
Porthos is one of those dogs that makes you want to play with his ears, rub his belly, and make sure he's never ever in need of anything. Besides...who can so no to a dog that's as adorable as he is??
I always say Connor Trinneer, , and John Billingsley. . .in that order!