Walking behind a cat making its way towards the first of two level crossings (lights on red). On hearing an oncoming train a slight sense of unease as to what happens next. Animal instinct takes over, or the folly of a young feline, yet to fully comprehend the multiple potential dangers to life and limb? The cat opts for a trackside verge, before slipping through the (still) closed barriers and running along the pavement, then entering the ground occupied by a former signal box and track maintenance facility (complete with ‘Danger’ sign). The law of the (urban) jungle?