Through natural selection, successive feral cat generations became bolder, more sociable and better adapted to inhabiting human settlements.

The reason could be because the attributes that make a successful feral cat are completely different from those that make a successful pet cat.

One floor was overrun by a feral cat colony.

The feral cat population had been reduced by 85%.

There has been reports of a deteriorating foundation and a feral cat infestation that has not been address since the school's inception.