Gumnivory - Its significance and potential use in captive wildlife management (1989)

Kelly, K., Miller, L., Newman, L. et al.

Abstract

The Black-tailed marmoset refused her medication, even hidden in her favorite food times, but accepted it when it was mixed into the gum arabic solution and offered to her in the familiar syringe. .... The Golden-headed Lion tamarins stripped off the bark over the gum sites to gain access to the gum that had been injected into the holes, whereas the Golden Lion tamarins were observed probing the gum-filled holes and then eating the gum from their fingers. ... At no time did we observe conflicts between the tamarin species over the gum.