Anti-predator response was expressed towards both the fox and the snake within the Brazilian bare-faced group. In the cotton-headed tamarin group, higher frequencies of anti-predator responses were shown towards the fox compared to the control but not towards the snake, this group instead showed more anti-predator responses to the control plant.

So to conclude, using predator models, preferably a stuffed fox, is an effective way of inducing anti-predator responses in these tamarin groups. Hopefully, a predator model designed with the results from this study in mind, can be used at Parken Zoo as environmental enrichment. By using a predator model, the probability of maintaining vital behaviors needed for survival in the wild for future generations can be increased.