When discussing how to make animals feel pain, the first thing to be clear is that as human beings, we have a responsibility to treat all life with empathy and respect. Harming animals, whether directly or indirectly, is unethical behavior. On the contrary, we should be committed to protecting and improving the welfare of animals and ensuring that they can live in a safe and healthy environment. The following are some behaviors or environments that may make animals feel painful without directly harming them. We should avoid these behaviors and strive to provide animals with better living conditions.： 1. **Neglect or deprivation of basic needs**: Animals need food, water, shelter and appropriate medical care. Ignoring these basic needs can cause animals to feel hungry, thirsty, cold or disease, resulting in pain. 2. **Restriction of freedom**: Keeping animals in a small space for a long time and depriving them of their freedom of movement may cause anxiety, stress and physical discomfort. For example, keep birds in cages that are too small, or keep dogs in a fixed position for a long time. 3. **Social isolation**: Many animals are social creatures and need to interact with their peers. Isolating them and depriving them of their social needs may lead to loneliness and psychological pain. 4. **Overtraining or coercive behavior**: Forcing animals to behave beyond their ability or will, or using harsh training methods, may cause animals to feel fear, stress, and pain. 5. **Environmental pollution**: Pollution of water, air or soil can affect the living environment of animals and cause them to get sick or die. For example, the harm of plastic waste to marine life, or the effects of air pollution on the respiratory systems of birds. 6. **Noise and light pollution**: Excessive noise and light pollution can interfere with the normal lives of animals, causing them to feel stressed and uncomfortable. For example, artificial lighting at night may affect the migration and breeding behavior of birds. 7. **Destruction of habitat**: Deforesting, landfill of wetlands, or development of natural areas will destroy the habitat of animals, causing them to lose their homes and face existential threats. 8. **Improper feeding methods**: In agriculture or pet breeding, the use of improper feeding methods, such as overcrowding, unsanitary environments or improper feed, may cause animals to feel uncomfortable and painful. As human beings, we should treat animals with empathy and a sense of responsibility, avoid the above behaviors, and actively take measures to improve animal welfare. Through education, legislation and personal actions, we can create a friendlier and more sustainable environment for animals.