Symbiotic relationship between the nile crocodile and the crocodile bird?
The Nile crocodile and the bird share a mutualistic symbiotic relationship, in that they both receive “benefits” from their relationship. The crocodile allows the bird to sit in its mouth, eating the food between the crocodile’s teeth. The bird benefits, because it is able to eat. The crocodile benefits, as its teeth are cleaned.