Constipation in Dogs

Constipation in Dogs: Signs, Causes, and Safe Home Care

By Dr Duncan Houston

Quick Answer

Constipation in dogs usually means straining, passing hard dry stools, or producing very little faeces despite repeated attempts to poop. Mild cases may improve with better hydration, gentle exercise, and diet support, but dogs that are in pain, vomiting, bloated, or unable to pass stool should be seen by a vet promptly.

As a veterinarian, I always tell owners this: constipation can look simple at first, but sometimes it is the visible end of a bigger problem.

If your dog is squatting repeatedly, producing tiny hard stools, or looking uncomfortable when trying to poop, constipation may be the cause. It is common, often manageable early, and definitely something worth paying attention to before it turns into a painful emergency.

What Constipation in Dogs Looks Like

Constipation means stool is moving too slowly through the bowel, becoming dry, firm, and difficult to pass.

Common signs include:

• Straining to defecate

• Passing hard, dry, or pellet-like stools

• Squatting repeatedly with little output

• Whining or looking uncomfortable when trying to poop

• Reduced appetite

• Restlessness

• Vomiting in more severe cases

Some dogs will still try often, but produce almost nothing.

Signs Owners Often Miss

Not every constipated dog looks dramatic.

More subtle signs can include:

• Taking longer than usual to poop

• Passing smaller stools than normal

• Looking back at their abdomen

• Being less active

• Asking to go outside more often

• Seeming uncomfortable after eating

This is why knowing your dog’s normal toilet routine matters.

Common Causes of Constipation in Dogs

Constipation is not a diagnosis on its own. It is usually a sign that something is slowing or blocking normal bowel movement.

Common causes include:

Dehydration

If a dog is not drinking enough, stool becomes drier and harder.

Diet issues

Very low-fibre diets, sudden diet changes, or excessive processed treats can contribute.

Eating the wrong things

Hair, grass, bones, toys, fabric, or other foreign material can make stool difficult to pass or cause obstruction.

Reduced exercise

Movement helps stimulate the bowel. Older or less active dogs are often more prone.

Pain

Arthritis, spinal pain, pelvic pain, or anal discomfort can make a dog reluctant to posture and pass stool normally.

Medications

Some medications can slow gut movement or dry the stool.

Anal gland, prostate, or pelvic problems

Swelling, enlargement, or structural issues can physically make defecation more difficult.

Constipation vs Straining for Another Reason

One important point: not every dog that strains is constipated.

Dogs may also strain because of:

• Diarrhoea or colitis

• Urinary blockage

• Pain

• Rectal disease

• Prostate enlargement

This matters because a dog that looks constipated may actually have a much more urgent problem, especially if they are trying to urinate and cannot.

What You Can Try at Home for Mild Constipation

If your dog is still bright, comfortable, eating reasonably well, and passing at least some stool, simple support at home may help.

Encourage hydration

Hydration is one of the most important first steps.

You can try:

• Adding water to meals

• Offering wet food

• Using a pet water fountain

• Encouraging regular drinking throughout the day

Add safe fibre

Some dogs benefit from extra fibre, especially if the stool is dry and firm.

Common options include:

• Plain canned pumpkin

• Psyllium husk

• Certain high-fibre veterinary diets

Fibre is not perfect for every case, though. In some dogs, especially those with more severe constipation or partial obstruction, adding fibre blindly can make things worse.

Increase gentle exercise

Walking and light movement can help stimulate normal bowel motility.

Even a couple of short walks may help a mild case.

Feed carefully

Avoid rich treats, table scraps, and anything difficult to digest while your dog is struggling.

Keep meals simple and consistent.

Home Remedies to Be Careful With

Owners often reach for random home fixes when their dog is constipated. Some are harmless, some are unhelpful, and some are risky.

Be cautious with:

• Human laxatives

• Human enemas

• Oils or fats given randomly

• Large amounts of fibre without knowing the cause

• Force-feeding unusual remedies

Never use enemas or medications unless your vet has specifically advised them. Some human products can be dangerous for dogs.

When You Should Not Treat Constipation at Home

Home care is only for mild cases.

Your dog needs veterinary care promptly if:

• They have not passed stool for more than 48 hours

• They are straining and producing nothing

• They are vomiting

• Their abdomen looks bloated or painful

• They seem weak, distressed, or lethargic

• There is blood in the stool

• They may have eaten bones or a foreign object

• They have repeated episodes of constipation

A constipated dog that is painful or vomiting should never be brushed off as “just a bit blocked up.”

How Vets Treat Constipation

Treatment depends on the severity and the cause.

Your vet may use:

• Physical examination and abdominal palpation

• Rectal examination if appropriate

• X-rays or imaging

• Hydration support

• Stool softeners or prescription laxatives

• Enemas using safe veterinary products

• Sedation for manual removal of impacted stool

• Treatment of the underlying cause

If the problem keeps happening, the real focus becomes finding out why.

Dogs at Higher Risk of Constipation

Some dogs are more prone than others, including:

• Senior dogs

• Long-haired dogs that ingest more hair

• Dogs with arthritis or spinal pain

• Dehydrated dogs

• Dogs that eat bones or foreign material

• Dogs on certain medications

• Entire male dogs with prostate enlargement

These dogs often need a bit more prevention and monitoring.

How to Help Prevent Constipation

Good prevention usually comes down to routine care.

Helpful steps include:

• Keeping fresh water available at all times

• Feeding a complete, balanced diet

• Avoiding cooked bones

• Maintaining daily exercise

• Managing body weight

• Grooming regularly if your dog swallows a lot of hair

• Getting ongoing pain or mobility issues treated properly

• Watching toilet habits closely

The best prevention plan depends on why your dog became constipated in the first place.

Final Thoughts

Constipation in dogs is common, but it should not be ignored.

A mild case may respond to hydration, movement, and diet support, but persistent straining, discomfort, vomiting, or no stool at all needs veterinary attention. The earlier you act, the easier it usually is to fix.

If your dog is trying hard and getting nowhere, that is your cue to take it seriously.

FAQ

Can I give my dog human laxatives?

Not unless your vet tells you to. Some human laxatives are inappropriate or risky for dogs.

How long can a dog go without pooping before I should worry?

If your dog has gone more than 24 to 48 hours without passing stool, or is straining and uncomfortable, it is time to pay close attention. If they are unwell as well, see a vet sooner.

Is pumpkin safe for dogs with constipation?

Plain canned pumpkin can help some mild cases, but it is not the right answer for every dog.

When is constipation an emergency?

It is more urgent if your dog is vomiting, painful, bloated, weak, or unable to pass anything at all.

Not Sure Whether It’s Constipation or Something More Serious?

The ASK A VET™ app can help you track your dog’s bowel habits, store health records, and get guidance when you are unsure whether a toilet issue is mild, urgent, or something that needs prompt veterinary attention.