Research from Frontiers in Psychology indicates that consciousness in animals may have developed gradually as brain complexity increased in ancient vertebrates. This challenges the notion that consciousness is exclusive to humans. Birds, for example, exhibit cognitive functions like selective attention and behavioral flexibility, suggesting that consciousness is more widespread than previously thought. The Stanford Encyclopedia of Philosophy highlights that different evolutionary paths may lead to consciousness in various species, including invertebrates. Furthermore, a review in Neuroscience and Biobehavioral Reviews emphasizes that early consciousness facilitated emotional regulation, allowing animals to assess threats and rewards. This self-reflection improves decision-making, enabling animals to adapt their behavior based on past experiences. Overall, consciousness is seen as a dynamic quality that significantly impacts how animals relate to their surroundings.