I thought that a good idea for this creature would be to give it a lifeguard function. By this I mean that, in case of danger, the eagle could pounce on its owner and take it in its claws to take it to a safe place.
This ability would also apply to other enemy players, being able to grab them with its claws and then drop them from a great height; even being able to dismount the player from flying creatures like the microraptor.