User blog comment:The Pro-Wrestler/Pure Good Proposal:Toothless/@comment-39032584-20191122160238

I vote yes. He shows a lot of agency and will for a non-verbal creature, and pretty much only acts aggressively out of self-defense, but otherwise often shows the playfulness and friendliness of a pet. That, and of course, he played almost just as huge a role as Hiccup in uniting vikings and dragons and helping them live in harmony rather that constantly fighting each other.