A mom who quit her flight attendant job to work with dogs has launched her latest venture – an ice cream truck exclusively for pups. Emmie Stevens, 36, opened Poochies Pupsicles on March 31 – and says business is booming. Based in South London, she is making the truck available for hire – and is planning to hit the road this summer. Emmie, a mom-of-one, left her cabin crew role 15 years ago to work as a groomer after realizing dogs were her “niche in life”. She first hit upon the idea of the ice cream truck four years ago after visiting a trade show, and has now made it a reality. The menu inc…