Endosymbiotic relationships -- in which one organism lives within another -- are striking examples of mutualism, and can often significantly shape the biology of the participant species. In new ...

Of the symbiotic relationships, mutualism, where both species benefit from the relationship, is the most exciting form. How two disparate species can form a cooperative where both benefit seems like ...

It’s well known that pollinators give us our favorite foods, from strawberries to sunflower seeds. But less familiar is what drives pollination: Mutualism. It’s an interaction between two individuals ...

In Tanzania, we watched on many occasions when small flocks of red-billed birds descended upon the backs of giraffes, cape buffalo, elephants and hippopotamuses, prancing around like they owned them.