This is the brain we share with birds, and reptiles. First, from the front, human eyes can see an object clearly, but a horse’s wide-set eyes cannot. Human beings are animals. Mosaic provides a simple comparison of brain size in a handful of animals so that you can compare to the average human. If you’re wondering how does a cat brain compare with a human brain, know this: There are numerous likenesses between the two, according to studies started more than four decades ago. Betz cells are the largest cells (by size of cell body) in the nervous system. The central nervous system includes the brain and the spinal cord. Although the space would, in fact, hold a small grapefruit, the cerebral hemisphere -- or "thinking" portion of the brain cavity is a lot smaller. With her background as brain scientist, horse trainer, and writer, Janet is uniquely positioned to apply brain function to the training of horses and riders. The brain of a cow, in contrast, equals only 0.1 percent of her body weight. The human brain is primarily composed of neurons, glial cells, neural stem cells, and blood vessels. Ahorses brain is about 8.6 to 9kg. For further information about the data, see the STAT 100 at UIUC Web Page A human's brain consists of more than 2 percent of his body weight. Among animals we … A horse's brain is NOT the size of a walnut that's a dumb idea. These demands defy the functioning of a horse’s brain. The brain. (The horse skull is courtesy of my good friend, Howard Pitzen, of the North Star Stampede Rodeo in Effie, Minnesota.) We aren’t plants and we aren’t bacteria, we are animals. Just the basics: hunger, temperature control, fight-or-flight fear responses, defending territory, keeping safe — that kind of thing. The brain's shape conforms approximately to the cranial cavity of the skull. It includes also the brains of the lower mammals, such as the horse and the cow. A horse's brain is similar in shape and function to that of other mammals. It is over 400 million years old and yet it remains structured into the anatomy of our human brain. The only difference between us and apes is the size of our brain. Animal brain comparisons. Welcome! Medical folks actually talk about the horse brain as having three sections: 1. All Hawkeye knows is that her rider is upset, forcing her forward to a place that she considers threatening. One Old Brain: One of our brains is very old. Anatomy and function of the human brain. Anatomy and function of the human brain. The brain is a very complex organ with many parts. Horse Brain, Human Brain is a book and training philosophy developed by Janet Jones. Select among several measures such as actual weigh, percent of body mass, or number of neurons.