Animals Name is a broad term that encompasses the vast array of species that exist on our planet. From household pets like dogs and cats to exotic creatures like lions and tigers, animals come in all shapes and sizes. In fact, scientists estimate that there are over 8.7 million species of animals on Earth. Some animals are known by their scientific names, while others have more common names that vary by region or language. Regardless of their name, animals play a critical role in the ecosystem and contribute to the diversity and beauty of our planet.