Creatures which clean (or groom) other creatures do so because the debris or unwanted matter from the creature they're cleaning is part of their diet.
After some research, all I have discovered are two bird names that may be a possiability. They are the Trochilas, but all I found here was that it was a type of hummingbird. The second bird is know as the Egyptian plover. This bird does eat insects off the ground but has not been seen eating out of a croc's teeth. I also found an article that said this story may be a myth. That there is no crocodile tootbrush bird. If there was it was said they picke leeches and fungus out of the teeth of crocodiles.
The bird gets fed and the alligator gets his teeth cleaned.
yes they do
I don't think they really cleaned they're teeth, besides, I'm not sure what kind of evidence they would leave behind but lets get to the main point, dinosaurs can't really and aren't smart enough to clean their teeth. But I once heard birds eat food from an alligator's or crocodile's teeth, so something like that may have happened. But from their intelligence, they probably would've just eaten that "bird."
alligator and alligator bird
Owl's clover is a wildflower native to western North America that produces small, pink to purple flowers that resemble the shape of an owl's head. It is commonly found in meadows, grasslands, and open areas with well-drained soil. Owl's clover is an important plant for pollinators like bees and butterflies.
Birds fly into a crocidiles mouth to clean its teeth. The bird is getting food from the croc's mouth while the croc is getting its teeth clean. This is a win-win situation, so if the crocidile ate the bird, the croc wouldn't get its teeth clean.
An Alligator
Crocodiles clean their teeth by opening their mouths wide and allowing small birds called "crocodile birds" to pick food bits and debris from between their teeth. This cleaning symbiosis benefits both species as the birds get a meal and the crocodiles get their teeth cleaned.
the clover bird eats flies and ticks.it is therefore beneficial to the croc.
A Bator is a aminal that is a combination of a Bird and a Alligator.
No modern bird has teeth.