What is a stressor?

What is a stressor?

• A. Any experience, environment, inanimate object which disrupts body's normal state of functioning
• B. A calm environment
• C. A mild ache
• D. A normal state

Answer: (A)

A stressor is any experience, environment, or object that disrupts the body's normal state. In animal care, stressors can be physical (pain or illness), environmental (loud noises, confinement, unfamiliar surroundings), or social (handling, unfamiliar people). When a stressor occurs, the animal’s body responds to restore balance, shown in changes like higher heart rate or stress hormones and in behavior such as withdrawal or avoidance. The idea is broad: anything that unsettles homeostasis, whether it's something you can touch, something in the environment, or an internal feeling caused by the situation. This breadth is why it’s the best description—it includes inanimate objects and all potential sources of disruption, not just sensations of discomfort or a calm state. A calm environment does not disrupt the body. A mild ache is a symptom or consequence of stress or illness, not the disruptor itself. A normal state is simply the absence of disruption.

A stressor is any experience, environment, or object that disrupts the body's normal state. In animal care, stressors can be physical (pain or illness), environmental (loud noises, confinement, unfamiliar surroundings), or social (handling, unfamiliar people). When a stressor occurs, the animal’s body responds to restore balance, shown in changes like higher heart rate or stress hormones and in behavior such as withdrawal or avoidance. The idea is broad: anything that unsettles homeostasis, whether it's something you can touch, something in the environment, or an internal feeling caused by the situation. This breadth is why it’s the best description—it includes inanimate objects and all potential sources of disruption, not just sensations of discomfort or a calm state.

A calm environment does not disrupt the body. A mild ache is a symptom or consequence of stress or illness, not the disruptor itself. A normal state is simply the absence of disruption.