As a result of climate change, many species are shifting the timing of important life history events, but little is known on tropical species, and even less on apex predators. This limits understanding of upper trophic–level responses to longterm change and its ecological consequences. A team led by researchers at the University of Washington, in collaboration with the NGO Botswana Predator Conservation, analyzed field data from 1989 to 2020 for populations of the African wild dog (Lycaon pictus). They discovered that, over a 30-year period, the animals shifted their average birthing dates later by 22 days, an adaptation that allowed them to match the birth of new litters with the coolest temperatures in early winter. But as a result of this significant shift, fewer pups survived their most vulnerable period because temperatures during their critical post-birth “denning period” increased over the same time period, threatening the population of this already endangered species.