Dug

Dug is the tertiary protagonist of the Pixar's animated feature film Up. A kind and loyal dog, capable of speaking human language through the use of his special collarbone, Dug was formely a canine minion of Charles F. Muntz, and also a subordinate to Alpha, before he would abandoned them and sided with Carl Fredricksen and Russell, on purpose to stop Muntz's dark schemes, eventually gaining the latter's entrust and approvement as companion. He also appears in the second Disney Heroes vs. Villains War, in a role similar to the original film, though with extra continuities.