The stethoscope tells us how the heart is beating. Behavior tells us if life is worth living.
: Animals possess innate behaviors (instincts) but also adapt through conditioning and imitation. zooskool stories work
A depressed dog, a hyper-vigilant cat, or a parrot plucking its feathers is not just exhibiting a "bad habit." These behaviors are often biological markers of underlying pathology. The stethoscope tells us how the heart is beating