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Explore the fascinating world of animal communication in this captivating lecture from Sir David Attenborough's 1973 Christmas Lectures series. Delve into the complexity and diversity of animal languages, from simple declarations to intricate messages conveying detailed information. Discover how various species use visual signals, scents, and other means to communicate vital information for survival, mating, and warning signals. Learn about the clever deceptions some animals employ by mimicking warning signals without possessing actual threats. Examine the similarities and differences between animal and human languages, and ponder the possibility of interspecies communication. This thought-provoking 59-minute lecture challenges viewers to reconsider their understanding of language in the animal kingdom.