How big is the skull of an adult american black bear? What is the size of an adult sun bear? Is #2 smaller than #1?
Sun bear
Sun bears grow to only about half the size of an American black bear. The total length of adult bear skulls was found to average 262 to 317 mm (10.3 to 12.5 in). Black bears cannot open their mouths to half their body length.
bear found in tropical forest habitats of Southeast Asia
Can an American black bear swallow a sun bear whole?