There are two really cute Dug plushes that Disney has created, one available at DisneyStore.com (previously disneyshopping.com) and the other available as a reward in the Disney Movie Rewards. In my opinion, they are both adorable! They have cute collars and can speak, just like Dug!
There is also a Dug Bobblehead at Disney Movie Rewards for 1075 points. The description reads:
Gently tap adorable Dug's head for a bit of a wiggly giggle. He's crafted in painted polyresin to capture his finest details; approx. 5" H x 4.5" W. No squirrels here!
DisneyStore.com also has a few other great pieces of Dug and Up Merchandise. Here are some of them.
Up 3 Piece Pin Set
Dug Plush Mini Bean Bag Toy 6 inches
"I Can Speak" Dug Giclee