Wild Animal Reunions

ITV, 8pm, Wednesday

More than 100 million people have watched the YouTube clip of Christian the lion reuniting with the men who bought him from captivity in Harrods and returned him to the wild.

But it’s just one of many such emotional reunions on the video-sharing website.

This new three-part series, narrated by Caroline Quentin, brings us a compilation of some of the most moving clips such as the keepers who raised orphan elephants return to the wild to find them and see whether their bond has stood the test of time.

A surrogate mother to an orphaned chimp returns to his sanctuary to see how she’ll be received and a scientist who has spent his life working with black bears puts his safety on the line to prove wild bears can develop bonds with humans.