AnAge is a database of longevity and ageing in animals. It features quantitative life history data for over 4,000 species, including extensive longevity records, body masses at different developmental stages, reproductive data, and physiological traits related to metabolism. In addition to quantitative data, AnAge also features comments and observations related to ageing or relevant to the life history of individual taxa. AnAge features a manually-curated collection of animal longevity records. Moreover, AnAge has extensive life-history traits such as adult body weight, gestation or incubation time, age at sexual maturity and other reproductive data. Lastly, observations on physiological or pathological changes with age in animals are (where available) featured. AnAge focuses primarily on chordates. At the time of writing, AnAge features 4,122 entries, including 1,331 mammals, 1,098 birds, 539 reptiles, 169 amphibians, 962 fishes and 28 non-chordates. Our focus is on accuracy and quality, however, not quantity, and only species for which we have confidence in the data are featured. Numerous experts have contributed information to AnAge and helped us meet quality standards. Professor Steven Austad, a world-renowned expert in mammalian ageing at the Barshop Institute in San Antonio, is AnAge__s expert mammalogist and curator.AnAge is a database of longevity and ageing in animals. It features quantitative life history data for over 4,000 species, including extensive longevity records, body masses at different developmental stages, reproductive data, and physiological traits related to metabolism. In addition to quantitative data, AnAge also features comments and observations related to ageing or relevant to the life history of individual taxa. AnAge features a manually-curated collection of animal longevity records. Moreover, AnAge has extensive life-history traits such as adult body weight, gestation or incubation time, age at sexual maturity and other reproductive data. Lastly, observations on physiological or pathological changes with age in animals are (where available) featured. AnAge focuses primarily on chordates. At the time of writing, AnAge features 4,122 entries, including 1,331 mammals, 1,098 birds, 539 reptiles, 169 amphibians, 962 fishes and 28 non-chordates. Our focus is on accuracy and quality, however, not quantity, and only species for which we have confidence in the data are featured. Numerous experts have contributed information to AnAge and helped us meet quality standards. Professor Steven Austad, a world-renowned expert in mammalian ageing at the Barshop Institute in San Antonio, is AnAge__s expert mammalogist and curator. http://genomics.senescence.info/species/