Companion Animal Grief: Supporting Pets After Bereavement

Companion animals including dogs, cats, and horses experience grief responses when they lose bonded companions, requiring owner awareness and supportive welfare interventions.

Key Facts

Dogs show measurable behavioural changes after the death of bonded companions including reduced appetite, activity changes, and increased vocalisation.
A 2022 study in Scientific Reports documented grief-like responses in 86% of dogs who lost a companion dog.
Cats show similar responses though often more subtle — reduced grooming, hiding, and altered sleeping patterns.
Horses can show severe distress responses including weight loss, stereotypic behaviours, and impaired performance after losing herd companions.
The neurobiological basis for grief in animals involves oxytocin, cortisol, and opioid system disruption following bond loss.

Welfare Considerations

Animal grief is a genuine welfare concern that many owners overlook or dismiss. The neurobiological evidence for grief-like states in social mammals is compelling: loss of a bonded companion disrupts social attachment systems that are as functionally real as those in humans. Dogs and cats in grief may stop eating, become lethargic, vocalise for the missing companion, or search the home. These are welfare-relevant states requiring active support rather than simply waiting for the animal to adjust. Welfare interventions include: maintaining consistent routine (disruption compounds grief stress), providing increased positive interaction and play, considering temporary fostering of another animal to provide social stimulation, and veterinary support including anti-anxiety medication in severe cases. Rushing to "replace" a deceased companion immediately is not generally recommended — grieving animals may react negatively to new introductions.

What You Can Do

Monitor your pet's food intake, activity, and behaviour carefully after losing a companion.
Maintain consistent daily routines — predictability reduces stress during bereavement.
Provide increased positive interaction, play, and gentle affection.
Consult your vet if grief behaviours persist more than 2-4 weeks or if the animal stops eating.
Allow the animal time before introducing a new companion — rushed introductions can increase rather than reduce stress.