There are loads of organisations out there trying to prevent the extinction of rare and wonderful animals. In most cases, I imagine people sympathise, but do little as these appeals for help are often for creatures far away. What if was something closer to home? What if something more common was at risk overnight? What if all of cats and dogs suffered from some disease and disappeared over night? How would people react and how would their loss affect us?
Write something that incorporates some of these themes.