Photo by Erica ShermanGravesend Cat Friends [https://www.facebook.com/pages/Gravesend-Cat-Friends/152963521459986], a Trap Neuter Return (TNR) group working to combat pet over-population and the stray cat problem in Southern Brooklyn, invites you to hear TNR expert Peter Szalaiko of Ferals in Peril [http://www.feralsinperil.org/] deliver a