4 When most people think of cats 'living rough' it is often images of Mediterranean countries that come to mind. Groups of cats haunting the tavernas and restaurants of Athens, or the 20, 30 or 40 cats flocking around the quayside when a tourist ship lands on a Greek Island. However, available food is limited on such islands and the regular arrival of tourist ships provides a focal source of food and it becomes impossible to overlook these scavenging groups. The availability of food has a direct effect on density, and consequently there are far more feral cats in cities than in rural areas. Cities throughout the world have more scavengable wastes than the countryside. In Britain we are not so obviously confronted by feral cats, but we certainly have a large population, and in London probably the highest urban population in the world. The south west of Essex contains a section of urban and suburban London (particularly when considering the historic county boundary of the Lea). Consequently an appreciation of their numbers and urban ecology ("A Walk on the Wildside" QED programme BBC1) is as relevant to the county's overall wildlife as is consideration of rural feral and farm cats. Feral animals are too often treated as if they are 'not there' by naturalists as it does not fit with the view we may have of the natural world. But like it or not, feral cats have been part of our county's wildlife longer than parakeets, grey squirrels or even rabbits. Essex probably had more of a paw in the introduction of, and changing attitudes towards, cats than any other area of Britain.