Which of the following factors can cause stress in captivity?

• A. Noise
• B. Excessive handling
• C. Incorrect grouping
• D. All of the above

Answer: (D)

Captivity stress comes from environmental and social conditions that don’t match an animal’s natural experiences. Noise can be disruptive, elevating arousal and stress hormones, disturbing sleep, and reducing feeding or recovery. Excessive handling increases fear and physical strain, raising stress levels and potentially impacting immunity and healing. Incorrect grouping disrupts social dynamics, leading to aggression or isolation, chronic anxiety, and poor welfare, especially for species with specific social structures. Any single factor can cause stress, and animals in care often face multiple stressors at once, so including all of these factors reflects reality. In practice, minimize noise, limit handling to necessary care with gentle methods, and group animals appropriately by species, age, sex, and social needs to reduce stress.