Branch Brook Park in Newark will be filled with dogs in costume tomorrow for the annual Strut Your Mutt Parade. Pet owners are encouraged to dress up their furry friends for the event, which will feature prizes for participating dogs. Registration begins at 9 a.m., with the parade starting at 10 a.m. on West Drive near Heller Parkway in Branch Brook Park. For those who can’t make it to Newark, additional Strut Your Mutt parades are scheduled for next Saturday at Grover Cleveland Park in Caldwell and Brookdale Park in Montclair.