Welfare science of grief in dogs following the loss of a companion animal or human, covering behavioral signs of canine bereavement, evidence-based support strategies, and when veterinary intervention is warranted.
Canine grief is an area where popular understanding has sometimes outpaced the science, but the research increasingly supports what observant dog owners have long reported: many dogs show genuine behavioral responses to companion loss that constitute a welfare concern. Whether these responses represent something phenomenologically similar to human grief or are best understood as behavioral disruption from altered social environment matters less than the practical welfare question — some dogs suffer significantly following companion loss and deserve appropriate support. The welfare response is straightforward: maintain routine, provide increased positive interaction, allow time for adjustment, and seek veterinary support if behavioral changes are severe or prolonged. Premature replacement of the deceased companion without allowing adequate adjustment time may compound stress.