Sun bears are the smallest bear species in Asia, typically measuring around 120 to 150 centimeters (47 to 59 inches) in length and weighing between 27 and 80 kilograms (60 to 176 pounds). They have a stocky build, short black fur, large paws, and an elongated snout. Sun bears have a distinctive golden or light-colored patch on their chest, which can vary in shape and size among individuals. They have a keen sense of smell and hearing, which they use to locate food and avoid predators.