President Joe Biden bit a young child in a now-viral video during a visit to Finland to celebrate the country's entry into NATO.
Biden approached the child as he boarded Air Force One to leave the country's capital, Helsinki. In video capturing the encounter, Biden is seen placing his mouth on her shoulder and nibbling as the child squirms and the mother looks on confused.
The audience for Biden's departure was made up of embassy staff members and their families.
Unusual behavior is nothing new for Biden, the oldest president in U.S. history. Reports this week revealed he frequently erupts in anger at staff, and the president often stumbles on stairs and stages.
The majority of voters worry about Biden's mental and physical health. An NBC poll last month found 68 percent of all voters worry about his condition and 55 percent said they have "major" concerns.
Biden faces the lowest support from his own party for a reelection bid in modern history. Just 38 percent of Democrats said the party should nominate Biden for reelection, compared with 57 percent who want to find someone else, according to a polling average published earlier this year.