Random post... but the Oregon Zoo has the following (but not limited to) Chelonia: Bell's Hingeback(s), Desert Tortoise(s), Giant South American River turtle(s), Arrau turtles, some Sliders, Western Pond turtles, and also features a Turtle Conservation Lab, in which various native Northwest torts and turts (which I think is where most of the western pond turts are) are hatched (which you can view!).