Inquisitive, thoughtful and _hungry_.
You don't want to mess with the diablos rojos.
The Mexicans call them that because they eat fishermen. Seriously.
They are more commonly called the "Humboldt Squid", and you don't grow 1,000 times your size in two years without being aggressive, hungry and *smart*.
Read http://www.deeperblue.net/article.php/696 for some scary crap, including:
"This fisherman was pulling up a large calamar, but there was a large demon feeding on it. You see, they are fierce and they even eat each other when caught. When the fisherman reached into the water to pull it in, the Diablo Rojo grabbed him and pulled him into the water. Somehow the man grabbed onto his boat. He tried to get back in, but the Red Demon attacked him and began eating him alive. The man held on for a long time during the struggle before he was finally ripped off and dragged into the deep. He was devoured alive by the Red Demon. He was my father's life long friend.”
"Pretty", yes, but never to be underestimated.