Concrete appeals to cats

Ian has finished laying new concrete in the back yard. Charlie mentioned next door's cat. Ian said cats are attracted to wet concrete. They walk on, stop - you think they'll reverse, but they always carry on. Once it was raining at the end of the day and he covered a conservatory-footing he'd just laid with plastic sheeting. In the morning they took the sheeting off and two cats had been across, under the sheeting, and stopped to have a fight in the middle.