French police warn drivers to be cautious as wild deer may display “completely unpredictable” behavior after eating fermented or rotten fruit. Multiple outlets report that the warning follows an incident in France’s Burgundy region, specifically in or around Saône-et-Loire, where a deer was recorded behaving erratically—running in circles—after appearing intoxicated. Police say that animals can become dangerous to motorists if drivers are not vigilant, because the animals’ movements can be sudden and difficult to predict. Authorities frame the issue as seasonal, tied to conditions that can lead fruit to ferment in the environment, affecting animal behavior. The reports note that the police shared a viral video of the deer as part of the public safety message. While the incident is described as unusual and potentially disruptive, the guidance focuses on road safety—urging drivers to slow down, remain alert, and take care when wildlife is near the roadway. The outlets also characterize the phenomenon as linked to intoxication-like behavior rather than any intentional harm.