New stories with a happy ending - Hungry Otter

Third graders from Pardubice primary school went to school in nature. Every day they have little adventures, but none of them would expect to play an important role in saving a life. On one of their trips they find a hungry and weak otter cub by the river. Where did his mom go? Why did she leave him alone? Children and teachers would like to take care of the animal, but what is the right way to do it? It's time to call in the conservationists!