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We explore professional dog-walking around the world. We hear from walkers from the United States, Argentina and Europe about how they operate, the growing market, and the challenges of making a career from taking other people's pets on daily walks - sometimes several at a time.

And we join a dog walker in Paris, Caroline, to find out why the relationship between walker and dog is the most important when securing clients.

Expect plenty of barks.

(Image: Caroline, a professional dog-walker in Paris, with three dogs)

Presented and produced by Sean Allsop