There are many different types of animals but no one knows the exact number of animal types. Categorizing all the different types of animals into classes makes it easier to study them and learn more about the animal kingdom. There are six animal classes and every animal in the animal kingdom belongs to one of them. We can also group similar types of animals into orders, families, genera, and species. This also helps to see the relationship between different species and families of animals.
All Animals A-Z List here
