One of Biden's dogs had an aggressive incident at the White House

Biden: My dogs have privileged access to the oval office 2:13

Washington (CNN) -

The two German Shepherds of President Joe Biden and First Lady Jill Biden were brought back to the Biden family home in Delaware last week.

This after Major, one of the Bidens' dogs, displayed aggressive behavior in the White House, two sources with knowledge of the matter told CNN.

Major, who was adopted by Biden in November 2018 from a Delaware animal shelter, had what one of the people described as a "biting incident" with a White House security member.

The exact condition of the victim is unknown, however, the episode was serious enough that the dogs were later transferred to Wilmington, Delaware, where they remain.

• PHOTOS |

  With Biden's dogs, pets return to the White House

CNN reached out to the White House for comment and did not immediately receive a response.

The 3-year-old Major is the younger of the Biden's two dogs and has been known to display agitated behavior on multiple occasions, including jumping, barking and 'lunging' at security personnel and equipment, according to the people. with whom CNN spoke about the behavior of the dog in the White House.

The oldest of Biden's German Shepherds, Champ, is about 13 years old and has become physically slower due to his advanced age.

The life of Biden's dogs in the White House

Champ and Major moved into the White House in January, less than a week after Biden's inauguration.

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"I've been obsessed with getting our dogs settled because we have an old dog and we have a very young dog," Jill Biden told Kelly Clarkson last month during an appearance on "The Kelly Clarkson Show."

“They have to take the elevator, they are not used to that, and they have to go out to the south garden with many people watching them.

So that's what obsessed me, making them feel comfortable and calm.

Biden also said the only place dogs aren't allowed is on furniture, though he admitted to catching Major on the couch.

"They run everywhere," Biden said.

A person familiar with the dogs' schedule confirms to CNN that they are in Delaware, but noted that they have been known to stay there with handlers when the first lady is out of town.

Biden left Monday afternoon for a two-day trip to Washington and California to visit military bases.

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