When Worlds Collide

As you head on the dirt path that snakes through light woods, you observe the many monsters that are around you. There are parent and children, playing alongside each other, different species of monsters playing together as they laugh with each other. Out of the corner of your eye, you spot an Angel and a Devil couple, and marvel at how they can easily put aside their differences, and respect (and love!) each other. Despite being two different races that supposedly rival each other, they learned to interact with each other, and gain respect. You wish humans would act the same way.
What do the others see?