[eng] Science fiction in the last decades has often empowered machines and provided humans with enhanced characteristics through the use of technology (the limits of artificial intelligence and transhumanism are frequent themes in recent narratives), but animal empowerment has also been present through the concept of uplifting, understood as the augmentation of animal intelligence through technology. Uplifting implies providing animals with the capacity to speak and reason like humans. However, it could be argued that such implementation fails to acknowledge animal cognition in favour of anthropomorphized schemes of thought. Humankind's lack of recognition of different animal types of communication has been portrayed in fiction and often implies the adaptation of the animal Other to human needs and expectations, creating a post-animal that communicates its needs to the reader through borrowed words. The main objective of this article is to analyze the use of uplifting as a strategy to give voice to animals in two science fiction novels written in English, both published in the twenty-first century: Lagoon (2014) by Nigerian-American Nnedi Okorafor and Bête (2014) by British author Adam Roberts. This article examines, from ecocritical and human-animal studies (HAS) perspectives, the differences and similarities in the exploration of the theme in both novels, which are often related to humankind's willingness or refusal to regard the Other as equal. Keywords: Uplifting, alterity, anthropomorphism, HAS, artificial intelligence.