Companion Animal Grief: How Pets Experience Loss of Animal Companions

Dogs, cats, and other companion animals show clear behavioural responses following the loss of an animal companion that are consistent with grief. Understanding these responses enables owners to provide appropriate support and make informed decisions about acquiring new companions.

Key Facts

Studies show that 63% of dogs exhibit at least one significant behavioural change after losing a companion animal
Changes include reduced appetite, increased vocalisation, searching behaviour, and lethargy
Cats show similar responses including increased attachment to owners and changes in resting locations
The grief period typically lasts weeks to months, with most animals showing improvement over time
Allowing surviving animals to be present at the death of a companion may reduce searching behaviour
Early acquisition of a replacement animal before the surviving pet has adjusted can cause additional stress
Behavioural changes typically peak 2-6 weeks after loss and gradually resolve over 2-6 months
Veterinary behaviourists can provide guidance when grief responses are severe or prolonged

Welfare Considerations

The grief responses of companion animals following the loss of a bonded companion are real, measurable, and deserve the same compassionate attention we provide to bereaved humans. A dog that refuses food, searches repeatedly for its absent companion, and lies in the spot where the deceased animal used to sleep is not merely confused — it is experiencing something genuinely analogous to grief, driven by the same neurological systems that produce grief in humans. Understanding this changes what owners can do: allow surviving animals to experience the loss rather than rushing immediate replacement, provide additional human contact and reassurance, maintain routine while allowing expression of grief responses, and seek veterinary guidance if the response is severe or prolonged. Companion animal grief is a welfare issue that deserves recognition alongside the human grief that often accompanies it.

What You Can Do

Allow a grieving pet time to adjust before introducing a new companion — rushing replacement can cause additional stress
Provide additional human presence and gentle physical contact during the grief period
Maintain routine feeding, exercise, and sleep patterns to provide structure during grief
If possible, allow surviving animals to be present when a companion is euthanised at home
Monitor appetite carefully and consult your vet if food refusal extends beyond 48 hours
Provide the deceased animal's scent items initially rather than removing them abruptly
Consult a veterinary behaviourist if grief responses are severe or not resolving after several months
Honour your own grief alongside your pet's — both human and animal grief are valid responses to loss