Dolphins 'have developed similar personality traits to humans'

Dolphins have similar personality traits to humans and other primates like monkeys and apes, a new study claims. It's already known monkeys and apes have similar personality traits as humans, but this study claims to be the first to investigate if the same traits exist in dolphins. Despite being adapted to an aquatic lifestyle and last sharing a common ancestor with primates 95 million years ago, bottlenose dolphins resemble non-human primate species in 'several behavioural and cognitive traits'. The 'big five' personality traits are the best accepted and most commonly used model of personality in academic psychology Researchers found dolphin behaviour almost aligns with this model.