Evidence from multiple species suggests animals experience something analogous to grief when companions die, with welfare implications for how we manage loss in both wild and domestic settings.
The recognition that many animals experience grief-like states has significant welfare implications. For companion animals, the loss of a bonded companion represents a genuine welfare event requiring a thoughtful response — not dismissal as "just an animal." For captive species in zoos and sanctuaries, the death of a social companion should trigger welfare assessment and additional enrichment or social support for bereaved individuals. In wild populations, mass mortality events (disease, culling) may create widespread grief-like states in surviving social group members. Understanding animal grief is an important component of holistic welfare assessment and respectful animal management.