A plush duck
Our male Basset (Goober) loves his duck. He likes to play tug of war with it, throw it around and sleep with it. Goober and his duck are very close. He takes it outside and inside when he feels like it. When he has it in his mouth I like to grab the duck by the neck and say "Duckie bites back whack whack" and bop him on the nose with the ducks bill. He likes it and then goes for the head. A stuffed duck makes a Basset happy.