First, a few words on "machismo."
According to Wikipedia: Machismo is a prominently exhibited or excessive masculinity. As an attitude, machismo ranges from a personal sense of virility to a more extreme masculism. In many cultures, machismo is acceptable and even expected.
Our new little friend, we believe, shows the very definition of this, Machismo. He has a little bit of a strut, he arches his back and shows off, and he is a brave little one. The very definition of Machismo. Of course, we couldn't call him that so the idea had to be shortened down.
The end result is Chimo (that's "chee-moe"). We like the name, and think it fits nicely.
Welcome to he family Chimo. I think you'll fit in nicely.