Years ago, when I was still in high school, I was bored during adv. Bio class.
Not a great drawing, but I"m kind of impressed with the accuracy of the anatomy, it isn't perfect, but off the top of my head in class, it's pretty good.

Used to have a pet Tarantula named Rosencrantz, but I had to give her away to a collector because I don't work, so I have no way to buy her food.
God I miss her T_T