in the wild

In the wild describes animals or plants in their natural habitat, not in captivity or cultivation: I've only seen elephants in zoos, never in the wild.

The phrase extends to technology, software, or products encountered in real-world use rather than controlled testing: We won't know how the app performs until it's in the wild.

Also describes seeing something rare or notable in an unexpected everyday context: I spotted a celebrity in the wild at the grocery store.