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US has imported billions of wild animals in the past 20 years

From 2000 to 2022, the US legally imported almost 30,000 different species of plants and animals, from songbirds to reptiles

By Sofia Quaglia

14 January 2025

New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Songbirds such as canaries were among the most popular wild imports

hanif66 via Shutterstock

Nearly 3 billion plants and animals have been imported into the US over the past two decades, most of which were taken from the wild.

“The numbers are absolutely massive,” says Alice Hughes at the University of Hong Kong. She says that estimate still probably falls short, as it only includes legal exchanges, and there is no comprehensive way to track the total trade of wildlife around the world. “We are just scratching the surface,” she says.

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