Ten feet wide, 15 feet long, 4.5 deep . . . and 87 degrees of chlorinated heaven! Treat your visiting (or local) pet to Open Swim at The Dog Run NYC  for just $20. Held from 2:00 p.m. to 3:00 p.m. on Saturdays and Sundays year-round, water-loving animals can take a group dip in the pool during this special time or you can shell out $50 to hop in with him for splashy fun playing keep-away or catch with the provided balls and frisbees or private pool time. Swimming is one of the best forms of exercise for pets because there is no pressure on the joins from impact with the ground and the warm water relaxes stiff and sore muscles – hydrotherapy specialists can help work with dogs in need of special therapy to help build muscles and resistance. If you're not sure how your pup will fare in the water, there are doggie life jackets available for that trial dip.