![](https://sumauma.com/wp-content/uploads/2023/07/Ingles-3-1-1657x2500.jpg)
![](https://sumauma.com/wp-content/uploads/2023/07/Ingles-4-1-1-1663x2500.jpg)
Authors: Pablito Aguiar, Raimunda Tutanguira and Jonathan Watts
Scientific consultants: Júlio César Bicca-Marques, a primatologist specializing in howler monkeys, and Paulo Moutinho, senior scientist at the Amazon Environmental Research Institute
Spell check (Portuguese): Elvira Gago
Translation into Spanish: Meritxell Almarza
English translation: Sarah J. Johnson
Page setup: Érica Saboya