Do Animals Grieve? New Research on Coyotes, Cockatoos and More Challenges Old Assumptions

For centuries, grief was considered a uniquely human experience, rooted in our awareness of mortality and the permanence of loss. But a growing body of research on animals—from coyotes to cockatoos—is prompting scientists to reconsider. Studies have documented behaviors that resemble mourning in a wide range of species, suggesting that the capacity for grief may be more widespread in the animal kingdom than previously thought. Researchers are now examining how animals respond to the death of a companion or family member, looking for patterns of altered behavior, vocalizations, and even apparent rituals. The findings could reshape our understanding of animal emotions and cognition, and they raise profound questions about the evolutionary origins of grief. As scientists continue to explore this once-taboo topic, one thing is becoming clear: the line between human and animal emotional life is blurrier than we imagined. The next challenge is to understand what these behaviors truly mean—and how they should shape our treatment of other species.