Today, it is common practice to distinguish something as intelligent or unintelligent based on its origin or behavior. One of the biggest discoveries of evolutionary biology is rapid evolution, which permeates every layer of the natural world. This is where natural glimpses of microevolutionary forms can be observed, revealing living organisms’ adaptive capacities converging towards intelligent behavior. In comparison, according to a Kantian postulate, encompassing ethical and anthropological conditions, nature acts for man until he is capable of acting with free intelligence; that is, until reason is fully realized to guide men towards performing morally good actions. This deliberation concerns humans acting with commendable conduct in a unified concept of will through reason to grasp not simply intelligence but a logical faculty that shapes our sense of duty. In Kant’s view of nature, this study posits in non-human animals’ signs of free intelligence in accidental relations with external agents, reaching an admirable display of ingenious abilities, as displayed in Kanzi and the South African beetle. Although it is difficult at times to distinguish purely reflex actions, humans’ reasoning strategies are not capable of reaching Kant’s practical maxims as a tool for achieving the greatest well-being necessary for all mankind.