A man was injured after being pistol-whipped by home-invasion robbers in North Hills early Thursday morning, police said.
The robbery was reported at 3:20 a.m. in the 9200 block of Valjean Avenue, according to the Los Angeles Police Department.
"The screen was broken but I don't know they got past the sliding door," the man's wife said.
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She recalled that they robbers were tall and skinny, dressed in black.
The four thieves armed with handguns woke them up demanding money, police said. The man's wife and kids were in the home but were not injured.
Police said the family pet was limping when they arrived and believe it may have tried to protect the homeowners.
"We believe the dog was in the interior of the home at the time and might have been injured during the struggle," said Sgt. Umberto Najera with the LAPD.
The robbers, who police say covered up their faces with masks, left with an $5,000 in cash. The victim suffered head trauma and was taken to a hospital.
Detectives have taken surveillance footage from the home while wrapping up the crime scene.
"We're scared that it could happen again," the wife said.