Calling all dog lovers and their pooches for a day of treats, tricks and lots of barking along Richmond’s historic Monument Avenue.  On Saturday, the Richmond Animal League will host its second annual Woofstock festival to raise funds and awareness for pet adoption.  To kick off the event, dog owners and their furry friends are invited to participate in the “Strut Your Mutt” walk at 9:30 a.m. on Monument, between Allen Avenue and Lombardy Street. Organizations and groups can create a “pack” of walkers by registering online to collect pledges and donations to turn in Saturday. However, all dogs and their humans are welcome and encouraged to participate and collect donations individually; there is no preregistration requirement. Walk-up registration begins at 9 a.m. the day of event.