Spreading the food around also can make it more challenging to eat as well as makes it difficult for an individual to dominate the food. It may also decrease the need to separate the animals for feeding, thereby allowing the public witness more natural feeding behaviors of the individuals. The most effective thing, we find, is to keep things challenging, novel, and always changing. When a particular individual becomes proficient with a certain device, we give it to another primate, and give the first one something new. After awhile, we give the old puzzles back to them and see how well they do after a prolonged absence.
Primates are very complicated beings, whose natural environments are very complex.
Applied primatology in the modern zoo. Zoo Biology . Enticing nonhuman primates to forage for their standard biscuit ration. Zoo Biology . The application and evaluation of behavioral enrichment in zoos.