The attack happened on the 13500 block of Ramsey Ave in La Mirada Saturday.
DACC's animal control officer Mireya Martinez responded to a call of a deadly attack between a pit bull and a Chihuahua.
When Martinez tried to contain the pit bull, she was attacked.
Authorities say the Los Angeles County Sheriff's deputy fatally shot the dog in order to save Martinez's life.
The DACC reminds the public to report stray dogs or animals roaming the streets. You can contact the Department of Animal Care and Control 24/7 at (562) 940-6898.