Compared to many other rodents, a beaver's brain has a smaller hypothalamus in relation to the cerebrum; this indicates a relatively advanced brain with higher intelligence. The cerebellum is well-developed, giving the beaver coordination in three-dimensional space (such as underwater). The neocortex is dedicated mainly to touch and hearing. Touch is more advanced in the lips and hands than the whiskers and tail. Vision in the beaver is comparably poor, and the beaver eye is not as well adapted to seeing underwater as that of an otter. Beavers have an acute sense of smell, particularly important for sniffing out scent marks and detecting land predators.