Portlander Brooke Barker has been fascinated with strange and sad animal facts for years. Some turtles breathe through their butts, for example. For a sampling of her cartoons, flip through this ...

Youngsters of a certain age might remember the Teenage Mutant Ninja Turtle craze of the 1980s and 90s; the masked cartoon creatures seemed to be everywhere. These days, biologists worried about native ...