An increasing number of oak processionary caterpillars are being reported across Germany, prompting concern among residents. The caterpillars, identified by red and white markings on trees, are spreading rapidly in some areas. Contact with the caterpillars’ hairs can cause skin irritation and allergic reactions in humans and animals. Dog and cat owners are particularly advised to be cautious, as ingestion of the hairs can cause serious inflammation in the mouth and throat. Authorities are monitoring the situation and advising the public to avoid contact with the insects and affected trees. The extent of this year’s outbreak is currently being assessed, with reports suggesting a significant increase in population.