Sunday is a special day for members of the Sacramento Itty Bitty Dog group – it’s when the “Itty Bitty” dogs come out to play at Carmichael Canine Corral.   One hundred eighty dogs and their owners make up the group which started in May 2008. The group meets about twice a month at the park for an afternoon of play.     To be considered “Itty Bitty,” dogs must be 12 pounds or smaller. Organizer of the group, Joan Lutz, said most of the dogs are rescue dogs.  It’s not just the dogs who enjoy the socialization, though, the owners enjoy spending afternoons discussing anything dog-related: nutrition, product recalls, doggy fashion and dog-sitting. It’s not uncommon to see a doggy manicu