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TLDR: Zoology is the scientific study of animals, both living and extinct, and how they interact with their ecosystems. It covers topics such as anatomy, physiology, evolution, behavior, and classification.

Zoology is a branch of biology that focuses on animals. It explores the structure, embryology, classification, habits, and distribution of animals. The term "zoology" comes from the Greek words "zōion" meaning "animal" and "logos" meaning "knowledge" or "study". Humans have always been interested in animals and their natural history, but the formal study of zoology can be traced back to the ancient Greek philosopher Aristotle. He observed and described animals, studied their structure and development, and considered their adaptations to their environment.

Over time, zoology has evolved and branched out into different disciplines such as anatomy, physiology, biochemistry, and evolution. With advancements in technology and scientific understanding, zoologists have been able to delve deeper into the study of animals. For example, the discovery of DNA structure by Francis Crick and James Watson in 1953 opened up the field of molecular biology, leading to breakthroughs in cell biology, developmental biology, and molecular genetics.

The history of zoology is a fascinating journey that spans from ancient times to the present. Prehistoric people studied animals and plants in order to survive. Ancient civilizations depicted animals in cave paintings and engravings, and the Egyptians incorporated animals into their hieroglyphics. The study of animals as living organisms began with Aristotle in ancient Greece, and continued through the Middle Ages and the Renaissance with scholars like Albertus Magnus and Conrad Gessner. The field of zoology gained momentum during the Enlightenment and the scientific revolution, with the contributions of scientists like Carl Linnaeus, Charles Darwin, and Gregor Mendel.

Zoology encompasses various branches and sub-disciplines. Some of these include vertebrate and invertebrate zoology, which focus on the study of animals with and without backbones, respectively. Structural zoology explores the anatomy and morphology of animals, while physiology investigates the functions and mechanisms of their bodies. Developmental biology studies the growth and reproduction of animals, while evolutionary biology examines the processes that have shaped the diversity of life on Earth. Ethology is the study of animal behavior, and biogeography explores the distribution of animals across different geographical regions. Molecular biology, on the other hand, investigates the genetic and molecular mechanisms underlying animal life.

In summary, zoology is the scientific study of animals and their interactions with the environment. It encompasses a wide range of disciplines and has a rich history that dates back to ancient times. Zoologists strive to understand the structure, function, behavior, and evolution of animals, both living and extinct.

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