If the world staged a competition for the nicest of animals, Siberian flying squirrel definitely would have gotten first place.
Although these animals called flying squirrels, in fact, they do not fly, as it were, glide through the air, through the membrane, a drop-down between their front and rear paws. Due to this "fit" proteins can climb to a height of over 100 meters, in case they need to escape from predators or simply to move to another tree.
Look at this miracle of nature, the level of cuteness which just rolls well.