Stress is a natural response to a perceived threat or change in an animal's environment. Chronic stress can have severe consequences on an animal's physical and mental health, including a weakened immune system, increased anxiety, and abnormal behaviors. In captivity, animals are often subjected to stressors such as confinement, noise, and lack of control over their environment. If left unaddressed, stress can lead to a range of behavioral and physiological problems, compromising the animal's welfare.