Intelligence, warm blood and strong family bonds have made mammals the most successful group of animals on the planet: they can even survive the Antarctic winter. Here, a Weddell seal leads her pup on its first swim beneath the ice. In East Africa, a rufous sengi uses a mental map of the pathways it has cleared to outwit a chasing lizard.
He will be 90 in May, but Sir David Frederick Attenborough has no intention of retiring – his latest film, about the world’s biggest dinosaurs, is broadcast this weekend, and his excitement and concern about the natural world remain undimmed.
He is best known for writing and presenting the nine Life series, in conjunction with the BBC Natural History Unit, which collectively form a comprehensive survey of animal and plant life on the planet. He is also a former senior manager at the BBC, having served as controller of BBC Two and director of programming for BBC Television in the 1960s and 1970s. He is the only person to have won BAFTAs for programmes in each of black and white, colour, HD, and 3D.