Original: Peter Rabbit, his sisters Flopsy, Mopsy, and Cottontail, and his mother are anthropomorphic rabbits who dress in human clothing and generally walk upright on their hind legs, though they live in a rabbit hole under a fir-tree.
Simplified: Peter Rabbit, his sisters Flopsy, Mopsy, and Cottontail, and his mother are anthropomorphic rabbits. They dress in human clothing and usually walk standing up.