When 1 cat of a pair dies, the survivor usually changes in ways you can count: grams eaten, episodes of night calling, hours spent at a door. Those numbers move for 2 to 6 weeks in most cats and come back without treatment. The job is not to diagnose grief, which cannot be done in a cat, but to keep the routine stable, record 4 signals for 3 weeks, and know the 7 numbers that mean the change is medical rather than social.
4 signals you can count
1. Night vocalizing. Count episodes, not impressions. A cat that called 0 to 1 times a night before and now calls 4 to 6 times between 02:00 and 05:00 has a measurable change; a cat that walks and calls for 2 hours straight is a different case and belongs in the vet column.
2. Intake. Weigh the food bowl, not the scoop. A drop from 55 g to 40 g a day is a 27 percent cut and worth a note; a drop to 20 g for 2 days is a vet call. Weigh the cat every 3 days on a kitchen scale, since a 4 kg cat losing 200 g has lost 5 percent.
3. Location. Time spent at the door, on the dead cat's bed, or under a bed. Under 2 hours a day is ordinary; 4 to 6 hours in 1 spot, or 12 hours hidden, is a signal. Log it in 30-minute blocks for 3 days to get a baseline.
4. Grooming and social contact. A cat that over-grooms a 2 to 5 cm patch on the belly or inner thigh, or that stops greeting you at the door, or that hisses at a shared blanket, is showing a change in arousal, not disrespect. Note the patch size weekly with a photo and a ruler.
Call it behavior, not depression
There is no diagnostic label for grief in cats, and the veterinary literature treats this as a change in activity, intake and vocalization that resolves in weeks. That matters practically: a cat that is quiet, off food and hiding looks identical whether the cause is loss, dental pain or kidney disease, and companion loss has no lab test. Recording numbers instead of adjectives keeps the door open to the medical explanation, and a share of cats presented for behavior change after a loss turn out to have a physical finding on bloodwork.
First 72 hours: routine and scent
Keep feeding times within 15 minutes of the old schedule, keep the same litter and the same box position, and do not rearrange furniture for 2 weeks. Leave the dead cat's bedding unwashed for 2 to 3 weeks so the scent stays available, and keep a window perch 30 cm from the glass. If the body can come home and the cat approaches calmly, many behaviorists suggest 10 to 30 minutes of sniffing; never carry the cat to it. Some cats show no interest, which is normal.
Feeding through the appetite dip
Offer 4 to 5 small meals a day instead of 2, warm wet food to 37 Celsius to raise the smell, and lift the bowl after 20 minutes so the schedule stays legible. Hand-feeding 10 to 15 pieces of kibble often restarts eating in a cat that stops when alone at the bowl. A cat that eats nothing for 48 to 72 hours, especially one that is overweight, can start mobilizing fat into the liver, which is a medical problem in its own right; 24 hours of complete refusal is the point to call, not the point to wait.
The 3-week observation window
One page, 4 numbers, 3 rows. Record daily; the week 1 versus week 3 comparison is the whole tool you have at home.
| Week | Food per day | Night calling | Hours hidden or at the door | Body weight | Action if under target |
|---|---|---|---|---|---|
| 1 | 40 g or more | 6 episodes or fewer | 6 hours or fewer | No loss over 5 percent | Vet call if 24 hours with no food |
| 2 | 45 g or more | 4 or fewer | 4 hours or fewer | Within 3 percent of start | Vet visit if weight still falling |
| 3 | 50 g or more | 2 or fewer | 2 hours or fewer | Within 2 percent of start | Bloodwork if 2 or more metrics are worse than week 1 |
| 4 to 6 | Back to baseline | 0 to 1 | Under 1 hour | Stable for 14 days | Close the file; recheck at 3 months |
Step back, then escalate
If week 2 is worse than week 1 on 2 or more metrics, do not extend the window: book a visit with a full blood panel, a T4 for any cat over 8, blood pressure and a dental check. If week 3 is better on 2 metrics but not back to baseline, keep the routine and review again at week 6; slow improvement is still improvement. If the cat improves for 5 days then drops again, look for a house trigger first, such as a changed work schedule, a visitor or a new smell.
Do not punish, do not force
No pulling a hiding cat out from under the bed, no carrying it to the empty bed, no scolding for night calling, no hissing back, and no forcing a meeting with the dead cat's blanket. Punishment for vocalizing at 03:00 is delivered minutes after the fact and teaches only that the house is unpredictable; the calling is not aimed at you. Do not rearrange the room to remove every trace in the first week, and do not punish the survivor for growling at a familiar object, which is a normal arousal response to a changed scent profile.
If you are considering another cat
No rule requires a second cat, and some cats do measurably worse with one. If you do adopt, wait until 3 weeks of stable numbers, then quarantine the new cat for 7 to 14 days, swap bedding for 3 to 5 days, and run introductions through a cracked door for 5 to 10 minutes at a time over 2 to 4 weeks. Feed on opposite sides of the door so the new cat predicts food, and stop any session that produces hissing for more than 3 seconds.
When it is medical: 7 numbers
Call today for 24 hours with no food, 48 hours with no stool, 5 percent weight loss in 2 weeks, 3 or more vomits in 24 hours, 12 hours hidden without coming out to eat or use the box, night calling for more than 2 hours, or yellow gums and skin. Breathing with the mouth open, or a belly that is tense to a light touch, means now, not today.
Do this tonight
- Write today's weight and today's food weight on 1 sheet of paper.
- Leave the other cat's blanket where it is; do not wash it for 3 weeks.
- Split dinner into 2 bowls 3 hours apart.
- Warm the wet food to 37 Celsius and sit with the cat for 10 minutes.
- Start a nightly count of calling episodes between 02:00 and 05:00.
Terms mentioned in this article
Frequently asked
How long does a cat grieve after losing its companion?
Most cats show countable changes for 2 to 6 weeks: less food, more night calling, more time at the door. The 3-week window is where you compare week 1 with week 3 rather than judging day to day. If 2 or more numbers are worse at week 3, the change needs a vet, because pain, dental disease and hyperthyroidism look identical from the outside.
Should I get another cat right away?
No rule requires a second cat, and a cat with unstable numbers is a poor candidate for an introduction. Wait for 3 weeks of stable food intake, weight and night calling, then quarantine for 7 to 14 days and run scent swaps before any face-to-face meeting. Some cats do measurably worse with a new arrival, so the decision should rest on your household capacity, not on the idea that a cat needs company.
Is my cat depressed, or is something else wrong?
Depression is not a diagnosis a vet can put on a cat. What can be measured is intake, weight, night vocalizing, hiding hours and grooming, and those numbers overlap with dental pain, kidney disease, hyperthyroidism and arthritis. Record them for 3 weeks, and if they are not improving or are worse at week 3, ask for bloodwork rather than assuming an emotional cause.