WEST HOLLYWOOD, Calif. (KABC) --Jan. 7 update: Bronson was located and reunited with his owner.
The owner of a dog missing since Dec. 5 is pleading for his beloved pet's safe return.
The Chihuahua, named Bronson, has been featured in a commercial.
He is described as having one blue eye and one brown eye.
His owner, Jason Christopher, at first thought he was lost until a friend saw the posters he put up and realized that she picked up Bronson when he ran off from the gym.
A woman driving by in a silver BMW 5 series told the friend it was her dog and gave Bronson to that woman.
"I'm not looking for anything other than my dog back. There's a $10,000 reward and I can make more money, but I can't replace what she's taken," said Christopher. "And I'm not seeking legal action, I'm not seeking... this can be done completely anonymous."
Christopher said Bronson is a registered service animal and has helped him recover since the death of his mother.
He said the Los Angeles County Sheriff - West Hollywood Station was investigating the incident.