Animals grieve the loss of companions — human and animal. Recognizing grief in companion animals and supporting them through loss is an important welfare consideration.
Companion animal grief is real and measurable, with behavioral, physiological, and neurochemical correlates documented across multiple species. Dogs, cats, horses, and even birds show responses to loss that parallel human grief in significant ways. Welfare-conscious owners and caretakers recognize grief responses and provide appropriate support: maintaining routine, offering additional interaction and reassurance, and allowing the animal to process the loss at its own pace. Forced socialization or rapid replacement of deceased companions may be counterproductive. Veterinary consultation is warranted when grief persists beyond expected timelines or significantly impacts the animal's health.