About 10,000 animals are being measured and weighed at the London Zoo's annual weigh-in. The records are shared with zoos and conservationists around the world.

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The zoo used creative ways to gets some of its animals on the scales. The London Zoo put all of its animals on the scales Thursday in its annual weigh-in event. The Zoological Society of London's zoo ...

Two of the world’s rarest lions have arrived at a UK zoo as part of a breeding program to help save the highly endangered big ...

London Zoo carries out its annual weigh-in of animals, including Ring-tailed lemurs, penguins and tortoises. The data collected from over 10,000 animals across 400 species is shared on a database so ...

Humboldt penguins inspect a special advent calendar garnished with fishy treats at London Zoo’s Penguin Beach, marking the ...

Friends are not just a human phenomenon. The benefits of social connections — friendships — are plentiful in many different types of animals. Members of many animal species participate in friendships, ...

Males of the South American species incubate their young in their vocal sacs. The London Zoo recently established a breeding colony to save the frog from extinction. By Franz Lidz The folk song “Frog ...

Humboldt penguins inspect a special advent calendar garnished with fishy treats at London Zoo’s Penguin Beach, marking the ...

London Zoo, previously known as ZSL London Zoo or London Zoological Gardens and sometimes called Regent's Park Zoo, is the ...

Annual cycles of changing daylength are important cues that influence many animals. Photoperiodism is the scientific term for the responses of organisms to the relative length of day and night. Such ...

The German hairy snail, a fingernail-sized ice-age species found along the River Thames, is now a top conservation concern. Here's why it matters and how scientists are racing to protect it.