If your dog is straining to poo, going less often than usual, or producing hard, dry, pebble-like stools, they may be constipated. The occasional off day is usually nothing to fret about and often sorts itself out. But constipation that lasts, or comes with straining and distress, needs a vet, partly because the straining can look very similar to a blocked bladder, which is a genuine emergency. Here is how to tell the difference, what gently helps at home, and when to pick up the phone.
A quick honest note before we start: I am a groomer, not a vet, so treat this as friendly guidance rather than a treatment plan.
What constipation looks like in dogs
Healthy dogs usually poo once or twice a day, so watch for a change from your dog's normal. Signs of constipation include:
- Straining or crouching repeatedly with little or nothing produced
- Hard, dry, small stools
- Going less often than usual, or not at all for more than a day or two
- Signs of discomfort: whining, a hunched posture, reluctance to sit
- Small amounts of liquid or mucus around the bottom (which can be mistaken for improvement)
One really important thing: straining to poo can look almost identical to a male dog straining because he cannot wee, and a urinary blockage is a life-threatening emergency. If you are not certain which end the trouble is, treat it as urgent and call your vet.
Common causes
Constipation usually comes down to something slowing the gut or hardening the stool:
- Not enough water, so stools dry out
- Diet: too little or too much fibre, or bits of bone
- Eating things they shouldn't: grass, hair (especially in fluffy dogs who groom themselves), fabric, gravel
- Too little exercise, which keeps the gut moving
- Matted or dirty fur around the bottom blocking or discouraging pooing
- Age and mobility: older, stiffer dogs sometimes struggle to posture comfortably
- Underlying issues: anal gland problems, enlarged prostate, pain, or other illness
That fur point is one I see a lot. A heavily matted or soiled rear end can genuinely get in the way, which is one reason a tidy, clean back end matters for comfort as well as looks.
Gentle home help (for a mild, one-off case)
If your dog is otherwise bright, eating, and it is early days, a few gentle steps may help things along:
- Encourage water: always available, and you can add a splash to meals
- Add a little fibre: a spoon of plain tinned pumpkin (not pie filling) is a classic gentle option
- Keep them moving: a bit more walking helps the gut do its job
- Check the back end: gently look for matting, stuck faeces or soreness, and keep the area clean and clipped
- Stick to their normal diet and avoid sudden changes or unfamiliar treats
Please do not give human laxatives, enemas or any medication. Some are dangerous for dogs, and dosing is strictly a vet's job. Home measures are only for a mild, short-lived case in a dog who otherwise seems well.
Vet note: Home tips are not a substitute for veterinary care. If simple steps do not help within a day, or your dog seems at all unwell or in pain, stop and call your vet rather than trying more remedies.
Red flags: see your vet
Contact your vet, or an out-of-hours clinic if it is out of hours, if you notice:
- Straining with nothing produced for more than a day, or repeated unproductive straining
- Straining to urinate, which can be an emergency, especially in male dogs
- Pain, distress, a bloated or tender tummy, or crying when trying to go
- Vomiting, off food, or generally flat
- Blood in or around the stool
- Constipation that keeps coming back or does not clear with gentle help
Your vet can work out what is behind it and treat it safely. The PDSA Pet Health Hub is a good vet-written place to read more while you decide whether to book.
Frequently asked questions
How long can a dog go without pooing before I worry?
Most dogs go at least once a day. If your dog has not been for more than a day or two, or is straining without result, it is worth a vet call, sooner if they seem uncomfortable or unwell.
Can I give my dog pumpkin for constipation?
A small spoonful of plain, unsweetened tinned pumpkin (never pie filling with added sugar or spices) is a gentle fibre boost some dogs tolerate well. It is for mild cases only and does not replace a vet check if things do not improve.
Why is my dog straining but nothing comes out?
This can be constipation, but it can also be a urinary blockage, sore anal glands, or something stuck, some of which are emergencies. Because it is hard to tell at home, repeated unproductive straining should be checked by a vet promptly.
Can matted fur cause constipation?
Matting or a heavily soiled bottom can physically block or discourage pooing and cause discomfort. Keeping the rear end clean and clipped helps, and a groomer can safely tackle stubborn matting for you.
This isn't veterinary advice
We're professional dog groomers, not vets, so please treat this as friendly general guidance. If you're worried about your dog, or before acting on anything here, speak to your local vet. In an emergency, contact your vet or nearest out-of-hours clinic.
Fluffs is a professional dog grooming salon in Wigginton, York, offering one-to-one grooming for dogs of every breed and coat type across Haxby, Strensall, Huntington, New Earswick and the surrounding villages. Keeping the back end clean and mat-free is part of every groom, which helps your dog stay comfortable. Book a groom to keep things tidy and comfy.