JCH-NACA Animal Control Officer Practice Test 2026 – All-in-One Study Guide for Exam Success!

Stress does indeed have a significant impact on an animal's immune system. When an animal experiences stress, whether it be due to environmental factors, changes in routine, or social dynamics, its body reacts by producing stress hormones like cortisol. Elevated levels of cortisol can suppress the immune response, making the animal more susceptible to diseases and infections.

The effects of stress on the immune system can lead to a range of health issues, including increased vulnerability to pathogens, slower healing processes, and a reduced ability to fight off existing illnesses. This phenomenon is observed across various species, indicating that stress is a universal factor that can compromise immune function.

While some may propose that stress impacts only certain age groups or varies significantly by species, research generally shows that stress adversely affects the immune system broadly across ages and species. Therefore, it is accurate to state that stress significantly impacts an animal's immune system, supporting the conclusion that the answer is true.