A local television anchor’s 4-year-old son underwent surgery Monday after being mauled by a dog belonging to a close family friend.

Veronica De La Cruz, an anchor for KPIX News and “Bay Area Nightbeat” on KBCW, posted on Facebook, “Prayers for my son who was mauled by a dog this morning. I’m a total wreck of a mom right now and could use your support. Thank you.”

Her son, Hartley, was attacked Monday by a Catahoula cur, a herding dog that typically weighs between 40 and 90 pounds and can reach up to 2 feet in height.

The dog is owned by a close family friend, and her son has known the dog since he was 2 years old, De La Cruz said in an email to The Chronicle.

Hartley had surgery Monday and may have to undergo another operation Tuesday on his eye, De La Cruz said.

A photo posted on Facebook showed her son’s head and eyes bandaged as he slept on a hospital bed.

“His CT scan was clear, no brain bleed,” De La Cruz wrote on Facebook.

De La Cruz joined CBS affiliate KPIX as an evening anchor in 2014 and launched “Bay Area Nightbeat,” an evening newscast, on KBCW.

“Thank you all for the love and support,” De La Cruz said. “Please keep praying for Hartley’s full recovery.”

Sarah Ravani is a San Francisco Chronicle staff writer. Email: sravani@sfchronicle.com Twitter: @SarRavani