"Zoological philosophy, or reflections on the natural history of animals" is the work of the outstanding French naturalist and biologist Jean Baptiste Pierre Antoine de Lamarck. In his book, the author expresses his unique ideas about the evolution of living beings, exploring natural patterns in the animal world. He analyzes issues of heredity, changes in the body under the influence of the environment and some other phenomena affecting the development of living beings. Lamarck's book is an important scientific work that opened a new perspective on evolution and heredity and became one of the key texts for understanding biological processes.