I'm looking forward to figuring out a interactions between them both when language is not an option. Characters being able to speak the same language with little to no effort, even across species boundaries, has always felt like cheating to me.
edit: That isn't to say that use of language will never happen. But between the wyvern and the other main character, it will never be on the level of natural conversation. It's much like how teaching commands to animals will only get them to understand some individual words but nothing about grammar, syntax and context.
Volpeon Extra
@areon@icy.wyvern.rip