24. Bornean Orangutan
Bornean orangutans are critically endangered due to logging and the expansion of palm oil plantations, which decimate their forest habitats. As vital seed dispersers, these orangutans play a crucial role in maintaining the health and diversity of tropical forests. Their decline disrupts this ecological service, leading to decreased forest regeneration. Protecting Bornean orangutans is not only about saving a species but also about preserving the intricate balance of their ecosystems, which support myriad other life forms.