Abstract Techniques used in cave art suggest that drawing skills emerged long before the oldest known representative human productions (44. 000 years bc). This study seeks to improve our knowledge of the evolutionary origins and the ontogenetic development of drawing behavior by studying drawings of humans (N = 178. 3- to 10-year-old children and adults) and chimpanzees (N = 5). https://allfixelectricales.shop/product-category/dishwasher-thermostat-seal/