The incident happened over the 4th of July weekend outside of a home on West Pine Street. In the video, you can see the man inside a silver sedan, throwing the firework into the front yard.
The firework exploded in the dog's face, causing significant burns and bleeding.
The Santa Ana Police Department said it has identified the suspect and will be requesting filing from the District Attorney's Office for a charge of animal cruelty and possessing explosives in public.
"Our patrol officers paid a visit to Romeo who is doing great!" said the police department on X about the dog.
Anyone with information on this case is urged to contact police.