Twycross Zoo have named Britain’s only baby bonobo ‘Biso’ after confirming the recent arrival is a male. The September birth was part of a coordinated conservation programme for the endangered species, and was mum Yuli’s first offspring. Four-month-old bonobo Biso and his mother have been pictured in the bonobo enclosure at Twycross Zoo, Leicestershire. The Zoo is the only facility in the UK to care for and breed bonobos, which are part of the great ape family and are our closest living relative

To primatologists around the world, Kanzi was a star. After years of training with sign language and a specialized keyboard, the 44-year-old bonobo had gained an unusually sophisticated understanding of human words, making him the focus of decades of research into nonhuman primates’ language abilities. But Christopher Krupenye, a cognitive scientist at Johns Hopkins University, wanted to test something different: Kanzi’s imagination. In March 2025, Krupenye and his colleagues acted out a version