Apart from the threat from disease vectors, a growing body of data shows that many small wild creatures such as snails, frogs and butterflies have become indicators of global warming.
隨著地球暖化，除生物病媒對人類的感染力不斷加溫，越來越多的資料也顯示，許多小型的野生動物，如蝸牛、青蛙、蝴蝶，也都成了地球暖化的指標。