How to Help a Grieving Dog After Another Pet Dies

Dogs Do Grieve — Here's What the Research Shows

A 2022 study led by Dr. Federica Pirrone at the University of Milan, published in Scientific Reports, and the ASPCA's Companion Animal Mourning Project reported owner-observed behavioral changes after a companion pet's death. The figures below draw on both sources:

• 74% showed increased clinginess — seeking more physical contact with their humans
• 67% became more attention-seeking
• 63% increased vocalization (whining, howling, barking)
• 60% engaged in territorial searching — patrolling the deceased pet's favorite spots
• 57% showed reduced playfulness
• 46% became less active overall
• 36% ate less or ate more slowly
• 35% slept more than usual

The ASPCA's Companion Animal Mourning Project found similar patterns. This isn't anthropomorphic projection — it's documented behavioral disruption caused by the loss of a social bond.

What to Do (and What Not To)

Keep the schedule identical

Feeding times, walk times, and bedtime routines must stay exactly the same. Your surviving dog's environment has already been destabilized by the absence of their companion. Adding unpredictability on top of that compounds the stress. Even small timing shifts — feeding 30 minutes late because you're grieving too — register as additional instability.

Don't comfort during active distress

This is counterintuitive, but animal behaviorists are consistent on it: when your dog is actively whining, pacing, or howling, soothing them with attention, treats, or physical affection reinforces the distress behavior. Your dog learns that anxious behavior produces positive rewards.

Instead, wait for a moment of calm — lying down quietly, resting, relaxed body language — and then offer gentle praise and attention. You're rewarding the state you want more of.

Leave the deceased pet's things in place

The bedding, toys, and food bowls of the deceased pet carry familiar scent that anchors your surviving dog's sense of household structure. Removing everything immediately creates a sudden olfactory void that can worsen disorientation.

Leave items in place for 1–2 weeks, letting the scent dissipate naturally. Then gradually wash or remove them. The transition should feel gradual, not sudden.

Allow the body inspection

If the death happens at home or through in-home euthanasia, many veterinary behaviorists recommend letting the surviving dog briefly sniff and investigate the body. Without this visual and olfactory confirmation, some dogs engage in prolonged, anxious searching behavior — looking for a companion that simply vanished without explanation.

If the euthanasia happened at a clinic, bringing home a scent-laden blanket can serve a similar purpose.

When to Worry

In the 2022 study, reported behavioral changes lasted less than two months for 29.4% of dogs, two to six months for 32.2%, and more than six months for 24.9%. But watch for:

• Complete food refusal lasting more than 48 hours — this is a veterinary issue regardless of the cause.
• House-training regression — indoor accidents during grief are common and should not be punished. Return to basic house-training schedules and clean with enzymatic neutralizers. If it persists beyond 2–3 weeks, a vet visit rules out urinary issues exacerbated by stress.
• Aggression that wasn't present before — if the household dynamic has shifted (especially in multi-dog homes where the deceased was the mediator or dominant animal), resource guarding or territorial behavior can emerge.

Cats Grieve Too

The same ASPCA project found that 78% of surviving cats showed increased clinginess, 43% increased vocalization frequency, and 63% searched the deceased cat's territory after a companion's death.

The advice is similar: maintain routine, don't reinforce anxious behavior, keep food bowls and bedding in their original locations, and give the surviving cat space to process without forcing interaction.

Don't Replace Too Soon

The instinct to ease household grief by immediately adopting a new pet is understandable but usually counterproductive. The surviving animal's social hierarchy is temporarily unstable — introducing a stranger during this period can trigger territorial aggression and resource guarding, particularly in cats.

The research recommends allowing the household 3–6 months to stabilize before considering a new adoption.

The When Your Pet Dies guide includes a Surviving Pet Behavior Tracker with daily scoring for appetite, activity, vocalization, and social behavior — so you can spot trends early and bring data to your vet if the grief seems to be crossing into something clinical.