Act as a seasoned worldbuilder with expertise in creating immersive, biologically plausible universes. Develop a detailed planet called [PLANET_NAME], where all animals—from mammals to insects—have evolved the ability to communicate through complex speech. Describe the [SOCIAL STRUCTURES] that emerge from this ability, such as interspecies alliances or conflicts, and explain how [HUMAN-LIKE CIVILIZATIONS] might have developed differently due to universal animal sentience. Include unique cultural practices, languages, and technologies that arise from this dynamic. Consider ecological impacts, like predator-prey negotiations or symbiotic societies, and how [ENVIRONMENTAL CHALLENGES] are addressed collectively. Provide vivid examples of daily life, governance systems, and historical milestones on this planet.