Because humans scare us.
Only a few species of turtles have cloacal bursae that are rich in blood vessels and can be used for gas exchange. The vast majority of turtle species do not either have these cloacal bursae, or if they do, they cannot use them for gas exchange. Please refer to the end of the article I am added to related links.
Reminds
A box turtle will pee just the same as he poops. Usually you won't notice it, but the pee will come out the same end.
painted turtles only like to pee in evion
humans!
Turtles (reptiles) are close to humans and frogs (amphibians) http://abacus.gene.ucl.ac.uk/will/files/TreeOfLife.pdf
It is not known why a tiger would pee on a human. Tigers pee on trees to mark their territory.
humans
from the acient pee pee's
poo and pee
Some turtles can bite humans - I think a big snapping turtle might be able to cut your finger off. However, turtles do not prey on humans for food.
you run to a tree and pee there!