Stockmaier, S.; Dechmann, D. K. N.; Page, R. A.; O'Mara, M. T.: No fever and leucocytosis in response to a lipopolysaccharide challenge in an insectivorous bat. Biology Letters 11 (9), 20150576 (2015)
Scientists studying a rare population of tool-using chimpanzees have found that aging can have a profound impact on their abilities—but not all chimps decline equally.