Across the world, science is transforming how we understand the animals who share our landscapes. Research in neuroscience, cognition, and behavior now points clearly to one truth: animals are sentient. They learn, remember, make choices, and navigate their lives with intention. Sentience is not a theory. It is measurable and observable. Scientists describe a global “sentience transition,” a moment when evidence has become too strong to ignore. Many mammals, birds, fish, and even some invertebra