Llamas at a farm in Belgium, whose antibodies are used in research.

Llamas at a farm in Belgium, whose antibodies are used in research.

Photographer: Kevin Faingnaert/Bloomberg

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One llama is sprawled on the grass with its neck craned, basking in a patch of sunshine. Another stands on a dirt hill, ears flattened defiantly. A third rushes to greet visitors with a friendly nuzzle.

This isn’t a petting zoo. The furry beasts are in Belgium for work.