Jessie

From Muppet Wiki

Jessie is the farm's sheepdog in Animal Farm. She serves as narrator of the film, recounting the animal revolution and its subsequent failure. Jessie is one of the first to suspect that the pigs are not working for the good of the other animals, and her suspicions are strengthened when her own pups are stolen. Finally fed up after the death of Boxer, and her own guilt for failing to save him, Jessie leads Benjamin, Muriel, and others in escaping from the farm. She survives to return when Napoleon's reign has ended, and the farm attracts benevolent new human owners.