If you're thinking of going on vacation with your furry friend then here are some of the best dog-friendly beaches in the US. Fort De Soto Park in St. Petersburg, Florida is one of the most dog-friendly beaches in the US. It even has Paw Playgrounds for big and small dogs. As long as your dog is on a leash no longer than ten feet they're allowed on Nags Head in North Carolina 365 days a year. North Beach in Del Mar, California has been dog-friendly since 1959. Dogs can be off-leash from Labor Day to Memorial Day and on a leash during the summer. Dogs are welcome on most of the beaches on Jekyll Island in Georgia as long as they are on a leash no longer than 16 feet. Rosie's Dog Beach in Long Beach, California, is the best option for some off-leash fun. It's open daily from 6 a.m. to 8 p.m.