Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Researchers have highlighted that the prehistoric artists used to be better at portraying the walk of four-legged animals in their art than modern man! The cavemen's art, paintings and abstract drawings were far more precise, vivid and accurate compared to the modern art and drawings. Even Leonardo da Vinci made mistakes when drawing a horse. Scientists have laid emphasis on the detailed way that the cavemen have adopted when they used to draw during the prehistoric times - most quadrupeds have a similar sequence in which they move each limb as they walk, trot or run. This sequence had been studied time and again by experts since the 1880s. Research specialists have observed and scrutinized the prehistoric and modern artwork ranging from cave paintings of cows and elephants to statues and paintings of horses, elephants and other quadrupeds in motion to see how well these artistic depictions matched the scientific observations...