The weight of sun bears (Helarctos malayanus) can vary depending on factors such as age, gender, and the bear's overall health and environmental conditions. Generally, adult sun bears have an average weight range of 60 to 150 pounds (27 to 68 kilograms). However, males are typically larger and heavier than females.
Female sun bears usually fall within the lower end of the weight range, while adult males can weigh closer to or exceed the upper limit. In exceptional cases, particularly large males may weigh over 200 pounds (90 kilograms). It's important to note that sun bears are the smallest among bear species, and their compact size is an adaptation to their forest habitat, allowing them to move more easily through the dense vegetation.