The brain of a long-finned pilot whale is bigger and more complex than ours. It weighs about 5.7 kilograms, which is more than twice as much as ours. It has more neurons and glial cells than any other mammal, including us. Neurons are the cells that transmit information in the brain, while glial cells are the cells that support and protect the neurons. The neocortex is the part of the brain that is responsible for higher cognitive functions, such as learning, memory, reasoning, and language. The long-finned pilot whale has a neocortex that contains about 37.2 billion neurons and 228.1 billion glial cells, while we have only about 16.3 billion neurons and 84.6 billion glial cells in our neocortex.