Generally, scientists agree there are six kingdoms. The animal kingdom (called Kingdom Animalia) is just one of those. In case you’re interested, the others are Achaebacteria, Eubacteria, Protists, Fungi and Plants. Originally, Linnaeus only identified two kingdoms: plant and animal. Animal classification is the process of identifying, naming and organizing animal species into groups. The branch of science that deals with animal classification is known as ‘ taxonomy ’. You’ve probably heard of animal groups such as ‘ mammals ’ and ‘ insects ’. Animal Classification. Kingdom. All living organisms are first placed into different kingdoms . There are five different kingdoms to classify life on Earth, which are Phylum. The animal kingdom is divided into 40 smaller groups , known as phylum . Here, animals are grouped by their main