The president and queen looked relaxed and chatted before they headed inside the castle for a private meeting.
The person needed medical attention after being "nipped" by the German Shepherd.
At 78, Biden was the oldest person ever to assume the presidency.
At 78, Biden is the oldest ever President.
Both German shepherds have been sent back to Delaware.
The Biden administration is recalibrating its relationship with Saudi Arabia.
In January, just before Biden took office, the Trump administration determined that China had committed "genocide and crimes against humanity".
She was pictured wearing a 'Make America Great Again' hat.
President Biden's economic aides push senators to reach an agreement on the coronavirus relief package.