You get a sense for the size of Reggie here. Why the young one thought it was a good idea to try to sneak up and see if she could get a jump on Reggie, I don't know, but she did.

It did not work. One (Reggie) was not amused.

Though Reggie was chill enough to just make it clear just how totally not amused one was with some very loud hissing before slowly walking off.