Frost did not know canine tag very well. He actually had no idea that what he was about to was canine tag. All Tybalt had told him was that you went into your natural form and tackled another canine. It was a way people said hello down in Amityville. He trusted Tybalt, (poorly), and as the wolfos saw a ghoul he’d only met in passing really, he took off his skull pin. They were off of school grounds, the nearby park, where most people would talk their minis out for walkies. Frost just kind of let his cyorgi run around and wander back. But while the cyorgi was away, Frost would introduce himself to the red canine student.

By charging at her and tackling her in his natural form.
Kyrieko