The emotion of feeling empathy for another who is in difficulty, is not confined to human beings alone. It is expressed in small degrees in animals too. Watch how swans empathized with a stranded fish gasping for its breath and saved the fish’s life.
Now in case you are wondering if the swans were trying to eat the fish instead of helping it, here is an interesting fact. “Swans are primarily herbivores, and thus eat aquatic vegetation such as algae, pondweed, waterweed etc.