Dog owner Marc Kornberg, 36, and the boy's mother, Myrvete Lila, 27, were arrested June 7 on felony warrants from the District Attorney's Office.
A police investigation determined the attack was the second on the boy. After the first attack, on March 6, the dog was placed on home quarantine and released when there were no other incidents of violence. The boy was treated and released from a local hospital.
In the second attack, on May 19, Pleasanton police officers accompanied an emergency medical crew to Kornberg's Bernal Avenue apartment for a reported dog bite where they found the boy with multiple facial injuries.
Both attacks were at Kornberg's home and in both, the boy suffered facial injuries from the dog, "Boston," a 6-year-old, 96-pound Presa Canario. The breed has been known at times to be aggressive.
"As a result of the second dog bite, and the fact that in both cases the boy was left alone in a room with the dog, our investigation was sent to the Alameda County District Attorney's Office for review, Lt. Jeff Bretzing said in a news release. "The District Attorney's Office issued felony warrants for both Kornberg and Myrvete."
The city stepped in after the second attack on the boy. On May 28, a public dog hearing was held and the dog was found to be vicious. Boston was ordered to be relocated to a rehabilitation and training facility in Ohio. The other option would have been to euthanize the dog, but Kornberg chose to send the dog away.
The boy's name is not being released. He was placed in protective custody with Alameda County Child Protective Services.