Rhea'li relaxes slightly, though he doesn't yet approach. That sort of body language...

"You don't appear to be wild..."

Trained, perhaps?

A hand goes to his chin, tail swishing behind him as he thinks. Training these sorts of animals are normally the realm of the beast tribes. But perhaps there's some similarity to how chocobos are trained? Sometimes their keepers would teach them key words, like...

"Home?" he tries. "Keeper. Master. Heel."