He did mention him, wanting him to join him as a retainer, let's be honest though it was probably as a curiosity and not as a honest thing. A pet isn't a samurai and doubt a samurai is just as easy to be. Fluent Japanese I also doubt since he'd have had someone to teach him, someone who doesn't share a language with him.
See reply below, I pretty much fell for BS for a couple years ago ^^"
He did mention him, wanting him to join him as a retainer, let's be honest though it was probably as a curiosity and not as a honest thing. A pet isn't a samurai and doubt a samurai is just as easy to be. Fluent Japanese I also doubt since he'd have had someone to teach him, someone who doesn't share a language with him.