Environmental enrichment refers to the process of enhancing an animal's living environment to promote natural behaviors and improve overall well-being. This can include providing various stimuli, such as toys, climbing structures, or social interactions, which encourage exploration and mental engagement. In both zoos and laboratories, environmental enrichment is essential for species like primates and birds, as it helps reduce stress and boredom. By mimicking their natural habitats and offering challenges, animals can exhibit more natural behaviors, leading to healthier and more active lives.