Aquacate Reserve a preserve given to Belize government by the Mennonite community because it contains two large lakes and jungle covered Maya ruins.
Alexi our guide found 2 howler monkeys sleeping way high in 2 trees. We made howler noises and shook trees but the monkeys only looked up from their nap or scratched their behind. Looked like gorillas through binoculars.
Use plenty of mosquito repellant!
Green Iguana Conservation Project: http://www.sanignaciobelize.com/project.html, 'I 'Guana Go to Cayo' at the San Ignacio Resort by the Princess Casino in San Ignacio.