After completing her Master's degree in Natural Sciences in Croatia, Tinka Plese worked for two years in the doctoral program at the University of Miami. She has been living in Colombia since 1988. In 1996 she received two sloths for their rehabilitation and reintroduction. Since then she has developed various activities related to the conservation of sloths and other xenarthrans, as well as other threatened wildlife species. Tinka is the founder and head of AIUNAU Foundation, which works in different fields of research, such as natural and medical sciences, wildlife rehabilitation, environmental education and awareness. She also works with communities that extract wildlife.