A couple of weeks ago I had a leak in the cooling system due to a marten that obivously like my car very much. The liquid was redish tough, but also "felt" like water between the fingers.

The marten had biten right next to the cooling water pump which is buried deep in the engine compartment. You couldn't see where it was coming from even when laying under the car. The water was dripping at several places not even close to the actual holes. And it was only dripping as long as the engine was still warm.