Bottlenose dolphins demonstrate sophisticated cognition including tool use, cultural learning, and self-recognition that raises significant welfare considerations.
Dolphin cognitive complexity means that welfare harms causing social disruption are particularly significant. Bycatch entanglement causes drowning - a distressing death for these air-breathing animals. Acoustic pollution from boat traffic, sonar, and industrial activities interferes with echolocation and communication, causing chronic stress and disorientation. The intelligence and social bonds of bottlenose dolphins make their welfare needs more comparable to great apes than to simpler marine organisms.