Twin City officials are reviewing animal control policies and focusing attention on getting better training and equipment for employees handling animal complaints after an uproar over a dog that was shot and killed by a city employee.The attention to animal control procedures follows the incident, which happened last week on Old Swainsboro Road while witnesses watched.Twin City Mayor Jimmy Greenway said the city has received “several complaints in the past” about this particular dog. The dog had a reputation for being aggressive and nipping at people, he said.The incident drew a great deal of attention after a woman posted a comment on Facebook, describing what her father observed as he witnessed the incident.The unidentified witness reportedly heard the dog barking and looked outside his apartment to see “the Twin City chief of police and a lady from animal control harassing a poor little puppy. The puppy was very small... maybe eight pounds,” Stephanie L. Hoey wrote on her Facebook page.