Mollie the white mare is clearly not adjusting well to life on Animal Farm. She is used to being treated better than the other animals, as she was more of a show horse than an a work horse. She was pampered with sugar and other treats, and she loved having ribbons braided into her mane. With Jones gone, there is nothing to keep her from being just another horse on the farm who has to do her share of work. Mollie finds this intolerable, as she is not accustomed to this kind of life--nor does she want to make the adjustment. Instead, she has sneaked to the fenceline of a neighboring farm, where she has been cossetted and petted in the way she used to be. Clover confronts her after discovering her "stash" of goodies, and the next day Mollie is gone--presumably to the neighboring farm where she will be treated much better than on Animal Farm.
BENJAMIN. The oldest and worst-tempered animal on the farm, Benjamin the donkey is also the most cynical. He believes that nothing will change there, know matter who rules the farm. He generally refuses to participate in any of the farm's activities.
MOLLIE. Mollie is a white mare whose vanity is so strong that she eventually escapes from the farm to work on a neighboring farm owned by humans. She loves the ribbons that her human masters put in her hair.
MOSES. Moses the raven is merely tolerated by the pigs. He flies to and fro and rarely joins the others, but when he tells them about the mythical Sugarcandy Mountain, it gives the other animals hope for a better life.