Which factors are likely to cause stress in animals under human care?

• A. Loud noises.
• B. Abundant space.
• C. Quiet environment.
• D. Overcrowding, hunger, human contact.

Answer: (D)

Stress in animals under human care comes from conditions that threaten their well-being and safety. Overcrowding increases social tension, competition for resources, and the need to move in cramped spaces, all of which raise agitation and anxiety. Hunger signals that basic nutrition isn’t being met, leading to distress, irritability, and weakened recovery from illness or injury. Human contact—involving frequent handling or the presence of people—can be highly stressful for many wildlife species, triggering fear and defensive behaviors rather than trust or habituation. When these three factors are present together, the likelihood and intensity of stress responses rise substantially, making this combination the clearest indicator of stress in a rehab setting. While loud noises can be stressful, and a larger, quieter space helps reduce stress, the option that includes multiple direct stressors provides the strongest, most comprehensive explanation of why animals become stressed under human care.