More: Nala is a 4 year old black lab mix, rescued from the SPCA. A dog with a sad past, filled with the loss of her puppies and many shelters. Once thought a lost cause due to heartworm, Nala is now healthy and heartworm free! A dog who wouldn't play with toys or chew bones early on, now so greatful for her toys that she divides her play time equally amongst them.