Can you imagine how your life might be without your best friend?
As humans, we rely heavily on friends for support, companionship, and even when we want to kick back and have some fun. But did you know that such partnerships are also formed throughout the animal kingdom - and not just within a single species?
Sometimes, completely different species or organisms forge close or interdependent relationships, to the advantage of at least one of the parties involved. This interaction is called 'symbiosis'.
symbiosis may have different levels of integration: from the initial level, in which different organisms or species benefit from coexisting to a higher level, where they end up sharing genetic material.
Here are some fascinating examples of symbiotic relationships in the animal kingdom you probably didn't know about.