Backpacking in Peru? I didn't sleep for three weeks when my son went to Italy to study in Florence. He stayed in the dorm, and was with his cousin, but I was a nervous mess until he came home.
Nice turtle!
WOW! What a great find your friend made! That is a Kinosternon scorpioides scorpioides, or scorpion mud turtle. While they are recorded from Peru they are rarely found in that country. A good friend of mine who has traveled to Peru many times since the 60s has only found a handful of scorpion mud turtles there.
Looks like a perfect specimen too. Do you have more photos?
Oh man, do I envy your friend! While I am a tortoise person, my first love (in turtles) is the Kinosternids. The tropical mud turtles are especially interesting.
Thanks.