Animals undergo a process called homeostasis to maintain stable internal conditions. This process involves various physiological mechanisms that regulate body temperature, pH levels, hydration, and other vital functions. For example, when the body temperature rises, mechanisms like sweating and increased blood flow to the skin help cool it down. Similarly, when internal conditions are disrupted, the body activates feedback systems to restore equilibrium. Homeostasis is crucial for survival, as it ensures optimal functioning of biochemical processes within the organism.