Why have you known images of uses of trademarks in their logo designs? Because they look pretty, are eye catching and because the use of the correct represent the correct image of your brand without the use of a Word. Brands also use photos of mammal because they are easily recognizable throughout the world. An arm of ten year old and homeless African children could not know what represents a lock, but certainly he can fix a jumping cat or a rabbit with a tie around the neck. There are hundreds of brands on the market, which have opted to present qualities of mammal to the functions of your brand, such as WWF, Puma, Lacoste, CNBC, Ferrari and more to customize.