Muhammed Kabir of Lawrenceville said the gator has been seen swimming and stalking prey in Dunlin Lake for two years and authorities said the animal may have been a pet abandoned in the lake, WSB-TV, Atlanta, reported Tuesday.
Kabir said the reptile has become like a pet to the neighborhood.
"It grew a little bit, it's still small, it's very cute too," he said.
However, Kabir and his neighbors said they are concerned about what will happen when the alligator gets larger.
"He's going to grow up and eventually can cause trouble," Kabir said.
The Georgia Department of Natural Resources said the gator is not believed to pose a threat to neighbors or their pets, but the homeowner's association could hire a private trapper to take care of the alligator if it comes to that.