My too-cool coworker Sea Sun Lee provided the answers to some random questions I posed earlier. Here they are.

Q: Do turtles make sounds? What kind?

A: Yes turtles make sounds. Mine usually hiss at me when it gets pissed off at me(red-eared sliders). I’ve heard snapping turtles make hissing sounds as well.

Q: How do you measure an animal’s visual acuity? I see a lot of claims about how this animal has sharp eyesight, and this other animal sees poorly, but how do they know? I don’t think they make the animals read eyecharts. ;-)

A: You can vivisection an animal cadaver and do measurements on optic nerve density on the retina, focal lengths, lense shapes, etc. and based on similarities or differences in human anatomy, determine how well an animal sees.