The domestic cat (Felis catus) is the domesticated form of the wildcat. It is one of the most popular pets. In pedigree cat breeding, only animals that do not belong to a recognized breed are often referred to as domestic cats. In Germany, domestic cats are the most commonly kept pets.

Due to their hunting behavior, free-roaming domestic cats are a threat to biodiversity in some places and are among the most problematic invasive species in the world. (Wikipedia)