For many years it was believed that humans were significantly different from other species, which made them somehow superior. However, research into the behavior of animals, especially our closest relatives, the monkeys, has led to new discoveries that show many similarities between humans and animals. Some of these similarities have called into question the uniqueness of humans and led to debates not only among scientists but also among the public. Frans de Waal, a renowned primatologist and author of The Ape and the Sushi Master, is among the scientists who say that animals and humans are quite similar. The main goal of his book is to show that culture is not exclusive to humans. De Waal was not the first scientist to propose the theory that animals nevertheless have a culture; was met with much enmity. He attributes this to the fear of losing the qualities that make human beings special. Claims about ape language became so threatening that animal research was all but banned. According to de Waal, “attempts at censorship reveal how much insecurity surrounds human uniqueness.” (32) In an attempt to support his thesis, he addresses the controversial issue of morality in animals. Morality is considered a cultural aspect and therefore people often use cultural biases in decision making. Dan Kahan, a psychologist, refers to this as cultural cognition, which “refers to the tendency of individuals to conform their beliefs about controversial matters of fact to the values ​​that define their cultural identities.” Next, theories about morality depend on the perspective of the scientists carrying out the research. De Waal supports his theory by analyzing aspects of morality in humans and comparing them to the behavior of animals. In a TED video talk... mid-article... that human morality is the result of evolutionary tendencies. Based on his study of animal behavior, particularly chimpanzees and bonobos, he records evidence of moral behavior in chimpanzees. A significant point de Waal makes is that animals have not developed morality to the level shown in humans. However, they exhibit behaviors that constitute the roots of morality. “Are animals moral? Let us simply say that they occupy several floors of the tower of morality” (181). In contrast, scientists opposed to morality in animals argue that supposedly moral behaviors in animals are due to anthropomorphism and that morality derives from religion. The question of morality in animals will most likely remain a complex and controversial issue even with increasing research. This is because the argument is based on a perspective influenced by cultural biases.