Watch One Monkey's Reaction To Unequal Pay
Turns out, much like humans, Capuchin monkeys do NOT like feeling cheated or underpaid. This TED talk presents an experiment where one monkey is given a cucumber for the same work another monkey gets a GRAPE for-that's right, A FREAKIN' GRAPE. That's like 20k in the monkey world so you do the math. Watch for the full experiment by Frans De Waal. VIVA LA REVOLUCIÓN!