Brooklyn’s Prospect Park is just one of the many parks in New York that's open to dogs, but it also features an especially cohesive community of pet lovers. They've joined to form local organization, FIDO (Fellowship in the Interest of Dogs and their Owners), and welcome off-leashed dogs on the first Sunday of every month for coffee, goodies, and good, ol’ fun for the pooches to help spread the word about animal-related news, rules, and other events. The park itself features many wide-open, roaming spaces with off-leash hours (in the evenings and early mornings), and even has a Dog Beach for those Summer nights.
Typically, there are four types of rules established in NYC parks — no dogs allowed; leashed dogs allowed, off-leashed dogs permitted (usually during certain hours only), and off-leashed dogs allowed in separate, fenced-in dog runs within the park. The Parks Department keeps a location list of the Source