The signs are now posted at Mill Creek Green, where Tuesday night an alligator attacked and ate an 80-pound Husky.
City officials say feeding wild animals in the area may have unintended consequences. Such as attracting alligators who eat the wild animals.
Alligators are native to the New River and the creeks along the New River.
Mostly they eat fish, turtles and other small animals, but ducks become an attractive meal when they sit along the banks of the river.
Residents are also advised that they should keep their pets on leashes and keep children away from the water, especially at dawn and dusk.
The alligator believed to have attacked a dog was recovered by authorities earlier this week.
Jacksonville police shot the gator three times with a high powered rifle, said deputy chief Patrick Traitor of JPD. Its body resurfaced Wednesday afternoon and has been recovered.
N.C. Wildlife officials determined it was not safe to relocate the alligator.
NC Wildlife officials said they found the apparent remains of the dog within the alligator.
The alligator attacked an 80-pound Husky at the Mill Creek Green portion of Henderson Green at Henderson Drive and River Street on Tuesday night around dusk. The woman walking the dog wasn't hurt.
"I'm not surprised because I live in apartments just across the road and my landlord says there are gators in the water and I always see kids and their parents by the water," said Jacksonville resident Jennifer Simmons.
City officials said the incident reinforces that residents should not feed wild animals, including alligators and ducks.
They also advised that residents should keep their pets on leashes and keep children and pets away from the water, especially at dawn and dusk.