That was 2009 when The Dog Stop opened its first location in Pittsburgh. Dog The Dog Stop - Long Hill, NJ vi Facebook loading... Rob Lax, who has over 25 years' experience as a certified dog trainer and has even trained seeing eye dogs, is one of the owners opening The Dog Spot in Long Hill in Morris County, NJ.com reported. Grand Opening Flyer The Dog Stop - Long Hill, NJ vi Facebook loading...They’re holding a grand opening Saturday, Sept. 27, from 10 a.m. to 2 p.m. You’ll find them at 977 Valley Road in Long Hill.