Since this tends to keep things constant, it allows the maintenance of homeostasis. For instance, when the concentration of carbon dioxide in the human body increases, the lungs are signaled to increase their activity and expel more carbon dioxide. Thermoregulation is another example of negative feedback.
Butterfly Spirit Animal & Totem. The butterfly is one of the most emblematic totem animals symbolizing personal transformation. If you see the butterfly as your totem or spirit animal, pay attention to the areas in your life or personality that are in need of profound change or transformation.
According to Universe of Symbolism, the butterfly is a sign of spiritual growth. The animal embodies the principle that there are times in life where the past must be done away with so that new life can begin. Butterflies can also be a symbol of beauty and grace. Feminine energy is also represented by the butterfly. The animal teaches the magic of believing. Universe of Symbolism also asserts that Reiki healing is symbolized by the butterfly.