The Life of Mammals

The Life of Mammals
Name	The Life of Mammals
Caption	Title card for the series
Genre	Nature documentary
Creator	BBC Natural History Unit
Narrated by	David Attenborough
Composer	Dan Jones and Ben Salisbury
Country	United Kingdom
Language	English
Num episodes	10
Executive producer	Mike Gunton
Producer	Mike Salisbury
Runtime	50 minutes
Network	BBC One
First aired	20 November 2002
Last aired	5 February 2003

The Life of Mammals is a comprehensive nature documentary series presented by the renowned naturalist David Attenborough. Produced by the BBC Natural History Unit and first broadcast on BBC One in 2002, the ten-part series explores the evolutionary success, diverse adaptations, and complex behaviors of the class Mammalia. Utilizing groundbreaking filming techniques, the series travels from the Amazon rainforest to the Sahara Desert and the Himalayas to document species from the tiny pygmy shrew to the massive blue whale.

Evolution and Classification

The series traces the evolutionary journey of mammals from their origins among the synapsids of the Permian period, through the rise of the therapsids, to their survival alongside dinosaurs in the Mesozoic Era. It highlights key evolutionary innovations such as the development of the dentary-squamosal joint in the jaw and the evolution of mammary glands. The documentary explains modern mammalian classification, featuring major groups like the egg-laying monotremes of Australia, the pouched marsupials such as those found in South America and Australasia, and the dominant placental mammals. It details significant fossil discoveries from sites like the Messel Pit in Germany that have illuminated the early evolution of groups like bats and primates.

Anatomy and Physiology

This section delves into the specialized anatomical and physiological traits that define mammals. It showcases the insulating properties of fur and blubber in species from the Arctic fox to the Weddell seal, and the unique mechanics of mammalian dentition, comparing the teeth of lions and giant pandas. The series examines sophisticated thermoregulation, including countercurrent exchange systems in the flippers of dolphins and baleen whales. Advanced sensory adaptations are featured, such as the echolocation of bats in the Carlsbad Caverns and the infrasonic communication of African elephants. The complex, four-chambered mammalian heart and highly developed neocortex are highlighted as central to their metabolic and cognitive prowess.

Behavior and Ecology

*The Life of Mammals* extensively documents the intricate social structures and survival strategies of its subjects. It films the cooperative hunting of African wild dogs in the Okavango Delta, the elaborate dam-building of North American beavers, and the sophisticated tool use of sea otters along the Pacific Coast. The series explores diverse feeding ecologies, from the grazing herds of wildebeest on the Serengeti to the insectivorous aardvark and the nectar-feeding honey possum. Episodes reveal complex communication, including the vocal learning of humpback whales and the symbolic bee dances understood by the honey badger. It also covers migration, such as the journey of caribou across the Arctic tundra.

Reproduction and Life Cycle

A central theme is the mammalian strategy of extended parental care, enabled by lactation and viviparity in most species. The series captures intimate scenes of birth and development, from the embryonic diapause of the tammar wallaby to the precarious first moments of a wildebeest calf on the Masai Mara. It contrasts the brief gestation of marsupials like the Virginia opossum with the lengthy pregnancies of African elephants. The documentary shows the critical role of play in cognitive development for young chimpanzees and orcas, and examines varied mating systems, from the lekking behavior of Ugandan kob to the monogamous pairs of Gibraltar's Barbary macaques.

Diversity and Distribution

The series celebrates the extraordinary adaptive radiation of mammals into nearly every terrestrial and aquatic habitat on Earth. It profiles aerial specialists like the colugo of Southeast Asia and the vampire bat of Central America, fossorial experts like the naked mole-rat of the Horn of Africa, and fully marine forms like the dugong of the Red Sea. Episodes journey from the frozen realms inhabited by the polar bear and the Siberian tiger to the arid landscapes home to the fennec fox and the thorny devil. It highlights unique island fauna, including the lemurs of Madagascar and the Tasmanian devil.

Relationship with Humans

The final episodes confront the complex and often fraught relationship between humans and other mammals. It documents the domestication of species like the Bactrian camel on the Silk Road and the aurochs, ancestor of modern cattle. The series addresses significant conservation challenges, including the poaching of rhinoceroses for the illegal wildlife trade and the deforestation threatening orangutans in Borneo. It also examines successful recovery stories, such as the reintroduction of the gray wolf to Yellowstone National Park and the protection of mountain gorillas in Virunga National Park. The narrative concludes by reflecting on humanity's responsibility as the dominant mammalian species.

Category:2002 British television series debuts Category:BBC television documentaries Category:Nature television series