Taxonomy is the science of classification. It is how living things group because of their similarities. John ray was the first person to define the word species. Carolus Linnaeus is called the father of taxonomy because he organized its classification system. Linnaeus used Greek and Latin for scientific names.
Every animal is put into one of the five groups: Mammals, Fish, Birds, Reptiles, and Amphibians. Each group has certain characteristics that tell what kind of group each animal goes in. for instance, mammals have hair, while fish don’t.
Mammals have a four chambered heart, hair, an internal skeleton, the ability to produce milk, and the ability to keep their body temperature about the same. Humans are mammals. The blue whale is the biggest mammal in the world, and it’s the biggest animal in the world. The smallest mammal is the Kitti’s hog-nosed bat, which is 1.2 inches long and weighs less than a dime.