Sure, why not? It’s likely that some of them did. That said, I can’t think of any examples we know of off the bat for sure.
The example of birds cleaning larger animals is probably fairly close to something that could have happened, I’ve seen the concept floated that some small pterosaurs might have filled a similar role, picking pests off of the large herbivores.
But to actually have proof of a symbiotic relationship in prehistory would be pretty difficult I’d imagine, since that kind of behavior is hard to capture in a fossil.
Sure, why not? It’s likely that some of them did. That said, I can’t think of any examples we know of off the bat for sure.
The example of birds cleaning larger animals is probably fairly close to something that could have happened, I’ve seen the concept floated that some small pterosaurs might have filled a similar role, picking pests off of the large herbivores.
But to actually have proof of a symbiotic relationship in prehistory would be pretty difficult I’d imagine, since that kind of behavior is hard to capture in a fossil.