A software engineer in New York City has found an unusual way to build a second income stream, by walking dogs in some of Manhattan’s busiest neighbourhoods. Twenty-eight-year-old Coby Goodhart now earns more than $6,000 (around Rs 5.72 lakh) every month through his premium pet-care venture, even while continuing his full-time tech job. What began as a personal love for pets has quickly grown into a six-figure side business in just over a year.