The video above is from ABC13's 24/7 livestream.
Officers were dispatched to the 1800 block of East Martha Lane, where a family reported that their dog had attacked an eight-day-old infant at 9:41 a.m.
The child sustained severe head injuries and was transported to the hospital via Life Flight for urgent medical attention, according to authorities.
Police said the Juvenile Division and Violent Crimes Unit are investigating the incident.
The family is reportedly cooperating with authorities.
Pasadena Animal Control Officers took the dog and relocated it to their facility, pending resolution of the incident.
For news updates, follow Chaz Miller on Facebook, X and Instagram.