Death of mother prompts adolescent chimps to look after their siblings

After their mothers died, adolescent chimps adopted their younger siblings and became upset if they lost sight of them even temporarily

Source:
https://www.newscientist.com/article/2207312-death-of-mother-prompts-adolescent-chimps-to-look-after-their-siblings/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home