Carey, M. C., West, A. M., Lozano, A. et al. 2012. Designing gum-based enrichment for captive patas monkeys (Erythrocebus
In the wild, patas monkeys (Erythrocebus patas) consume Acacia spp. gum for 20% of their active time. While providing gum-based enrichment to other gummivorous primates is not a unique idea, there have been no reports...