One hospital's therapy dog is helping patients remain cheerful during the most wonderful time of the year.
His name is Sancho and he's a 10-year-old Jack Russell terrier.
Sancho is one of two therapy dogs at San Gabriel Valley Medical Center in California.
"We have a pet therapy program at the hospital because we know that pets can help reduce anxiety and bring comfort to patients and their loves ones as well as our staff," hospital spokeswoman Eileen Diamond told ABC News.
Diamond added that Sancho has been on the job, spreading happiness and smiles, for two years. His owner, who asked not to be identified, brings him to the hospital on a weekly basis.
After asking if a patient would like a visit from Sancho, or the hospital's other dog named Scotty, Sancho comes into the patient's room for any amount of time. Then he moves on to the next patient, after practicing good hygiene, of course.
"As all hospital employees and volunteers have to have an ID badge, Sancho also has an ID badge that he wears all the time when he's in the hospital," Diamond said.
She continued, "We are delighted to have him."
Sancho got the internet's attention after an employee's daughter tweeted out photos of the terrier on the job. The pics have been retweeted nearly 8,000 times and have been liked more than 11,000 times.
My mom works at a hospital & they have this service dog go around to cheer up patients. Here he is earlier today with the Christmas spirit???? pic.twitter.com/5J6f9tlOp4— juliee. (@jewelsssm) December 6, 2016