It's shocking and deplorable that we still use animals for experimentation, Tracy. With the available technology, vivisection is not needed.
Thanks for introducing us to your area of Thailand and to the Macaques.
Not far from my house, there is a monkey rescue called Jungle Friends Primate Sanctuary. They rescue monkeys from experimentation, circuses, zoos, and private homes. They have over 250 Capuchins, Marmosets, Spider Monkeys, Squirrel Monkeys, and Tamarins. For several years I was their bookkeeper and Treasurer.