First biter: Joe Biden's dog bites another Secret Service agent. It's the 11th time.

WASHINGTON - President Joe Biden's dog Commander bit another Secret Service agent, the agency confirmed, the 11th known biting incident of an officer by the 2-year-old purebred German Shepherd.

The incident occurred Monday night around 8 p.m. Secret Service spokesman Anthony Guglielmi said that a Uniformed Division police officer "came in contact with a First Family pet and was bitten."

The injured officer was treated by medical personnel on White House grounds and is doing OK, Guglielmi said.

Records made public by the conservative group Judicial Watch in July revealed 10 previous biting incident attacks from Commander against Secret Service officers. In one instance, a Secret Service agent had to be treated at a hospital.

Commander was a gift to the Bidens in December 2021 after the Biden family sent another dog, Major, to live with family friends following a series of biting incidents. A third Biden family dog, Champ, died in June 2021 at 13 years old.

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"As we’ve noted before, the White House can be a stressful environment for family pets, and the First Family continues to work on ways to help Commander handle the often unpredictable nature of the White House grounds," Elizabeth Alexander, communications director for first lady Jill Biden, said in a statement.

Alexander added that the first couple is "incredibly grateful to the Secret Service and Executive Residence staff for all they do to keep them, their family, and the country safe."

Following Commander's prior biting incidents, the first lady's office said White House staff would be taking "additional leashing protocols and training, as well as establishing designated areas for Commander to run and exercise."

Reach Joey Garrison on X, formerly known as Twitter, @joeygarrison.