The child’s mother, 33, was injured while trying to protect her son during the attack in the family’s home in Mascalucia.
Giorgio Bonarrigo was playing in a paddling pool in the back garden when the dogs attacked, La Stampa reported.
The boy died before medics arrived, the newspaper said. The dogs have been impounded.
“Today is a tragic day for Mascalucia,” Fabio Cantarella, the town’s deputy mayor, wrote on Facebook on Tuesday.
“I ask you to pray for the boy and for the mother who was injured while trying to save him from those ferocious dogs.”