(nods) Makes sense, Wartortle are for the most part a peaceful race when not threatened, and have very long lifespans so long as no one hurts them mortally. And he has quite the cute tail as well, so fluffy and swirly.
You know, I really hate to be the jerk to point this out, but please, PLEASE learn to find out what media this is before saying something like this. It's right under the title of the piece and the artist's name, under the piece itself. Saves the artist themselves time in answering and yourself from embarrassment if you take two seconds to look.