Animals
Six adult spider monkeys (Ateles geoffroyi) participated in this study. They were maintained at the field station Pipiapan hosted by the Universidad Veracruzana, near Catamaco, province of Veracruz.
![](https://nbid43.ifm.liu.se/wp-content/uploads/2023/04/AtelesPortrait3-1-1024x757.jpg)
Procedure
I used a two-bottle preference test of short duration (2 minutes).