They're small and they jump too suddenly. They're cold and slimy. These are some reasons why some people DON'T like frogs but this is an unfortunate point of view. Frogs are an important animal to our environment besides being endearing creatures to admire.
Frogs have a body surrounded by a skin with some unusual properties.
In fact, frogs do not drink water through their mouths at all - it is absorbed through the skin on their lower abdomen. Because of this porous skin which allows water to pass directly into the body cavity without being filtered through the stomach, frogs are susceptible to any and all pollutants in the environment. This is why frogs are so often referred to as 'environmental indicators' - which is a more formal way of saying that they are our 'canaries in the coal mine'. Aside from telling us when there is something wrong in our environment, frogs' skin also has some unusual chemical properties of it's own. For example, many species have anti-fungal agents in their skin which help to protect them from fungus attack in the wet and humid habitats they live in.