I discovered some strange marks on my car… and I was surprised to learn what caused them.

The Unlikely Culprit: Tree Frogs

“Relax, they’re just frogs!” he said. Frogs? Really? At first, I thought he was joking. But he explained: tree frogs, tiny acrobats of the night, often wander in search of moisture. With their suction-cup toes, they can easily climb smooth surfaces—like car windows and hoods.
Marks, Not Danger
As they move, tree frogs leave behind faint traces of moisture or tiny residues. Drying in the morning light, these marks look mysterious—sometimes even like scratches—but they’re harmless. No intruders, no aggressive animals, just a quiet night-time visit from a tiny forest dweller.

Why Are These Visits Becoming More Common?

Tree frogs love damp areas, especially after rain or near greenery. In cooler seasons, they search for warm, sheltered spots to spend the night, and a car’s smooth surface is perfect for their little adventures. Windshields, hoods, even mirrors can become their playgrounds.

What to Do If It Happens to You
Wipe the marks gently with a soft cloth and lukewarm water.
Avoid parking near trees or dense bushes if you notice frequent nocturnal visitors.
Do a quick morning check if you have children in the car—it’s a simple safety step.
Never try to scare or capture the frogs—they’re harmless and sometimes protected.
Sometimes, the most puzzling mysteries have the tiniest—and friendliest—culprits.