Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

My Rescue Dog Has Diarrhea, Is It Common? Vet-Approved Facts & FAQ

a cute dog in animal shelter

One of the most common issues that new dog owners face when bringing home a dog from the shelter or a rescue is the presence of diarrhea. Many rescue dogs can end up having diarrhea after they come home, and many times, this diarrhea ends up on your carpet. This can be stressful, frustrating, and concerning. How common is diarrhea in rescue dogs? Should you worry about it? How long does it take to go away?

These are common questions that many people ask after bringing a rescue dog home from the shelter, and we have the answers. In the vast majority of cases, diarrhea in rescue dogs is common and benign. It should resolve itself quickly after your dog settles in, but that is not always the case. Here is everything you need to know about diarrhea in rescue dogs, including what to do about it and when to be concerned.

dogster paw divider

How Common Is Diarrhea in Rescue Dogs?

Diarrhea is very common in rescue dogs. In fact, it is one of the most common health conditions that dogs suffer from as they transfer from a shelter to a new home. Most diarrhea incidents clear up within a few days. Diarrhea is so common in rescue dogs that most shelters will provide information about this transitional diarrhea when you adopt your dog.

As long as the diarrhea is mild, your dog isn’t showing any other signs, and it clears up in a few days, there should be no need to worry.

The 3 Causes of Diarrhea in Rescue Dogs

There are three main causes of diarrhea in shelter dogs. Those causes include stress (or anxiety), changes in diet, and parasites.

1. Stress

Stress and anxiety from being in the shelter or the move to your home can create inflammation in a dog’s digestive system or throw off the normal balance of gut bacteria. Either way, diarrhea can result. Once your new dog gets comfortable with their new surroundings and feels safe in your home, the diarrhea will often clear up.

sick male beagle dog lying on the sofa
Image Credit: Przemek Iciak, Shutterstock

2. Diet Changes

Diet, including a change in diet or poor diet, can also lead to diarrhea. Some shelters feed their dogs donated food, which means that dogs can eat a variety of different things on any given day. Your dog will probably also get a change in diet when you bring them home. This constant change can lead to digestive upset, including diarrhea.

Once you settle on food for your new dog, be consistent and stick with it. If you are worried about transitioning your dog’s diet, you can ask the shelter what food they were feeding so that you can gradually switch them over to help alleviate instances of diarrhea.


3. Parasites

Lastly, your dog could be suffering from a parasitic infection. The shelter is full of dogs of all kinds, and they all share one environment. This can lead to the transfer of parasites from one dog to another. Most parasite infections can be easily treated with deworming medications, but some infections might require more intensive treatment from your veterinarian. If you are concerned that your dog might have parasites, it is best to bring them in for a checkup at the vet to make sure that everything is normal.

The bottom line is that rescue dogs go through a series of serious changes in a very short amount of time. They get a new home, new diet, new family, and new routine all in a matter of days. This upheaval can have a number of effects on your dog, and many of them can lead to diarrhea.

beagle dog sick sad on bed
Image Credit: Iryna Imago, Shutterstock

dogster paw divider

How Serious Is Diarrhea in Shelter Dogs?

Diarrhea is usually not serious in shelter dogs. It can be annoying and frustrating to deal with, but it usually resolves in a few days with little to no treatment. Diarrhea is considered serious if it is explosive, constant, or if it is paired with other signs. You should be concerned if your dog is having constant diarrhea and also refuses to eat or if your dog is showing signs of lethargy or has blood in the stool.

Frequent diarrhea can lead to dehydration, which can be serious if it persists. Normally, mild diarrhea is not a cause for immediate alarm or concern. If your dog is having a short bout of diarrhea and it does not seem to be affecting their mood, attitude, or behavior, then the issue will likely resolve on its own in a few days.

How to Treat Diarrhea in Your Rescue Dog

Often diarrhea in your newly adopted dog will resolve by itself once they get settled in and require no treatment. However, if it fails to go away or becomes more severe with other signs, speak to your vet. They may recommend withholding food, a change in diet, or the addition of probiotics and fiber.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the personalized advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

When to See a Veterinarian

It is often recommended that owners take their rescue dogs to the vet within a week of bringing them home, regardless of whether they have diarrhea. A checkup will help ensure that your new dog doesn’t have any health concerns, and it will get their new medical file started for future visits and treatments. You should take your dog to the vet if they are having explosive diarrhea, won’t eat, aren’t settling in, or are showing signs of lethargy or labored breathing. You can also bring them in if you want to seek medication to help alleviate the signs (and the mess) of your dog’s issues.

Severe diarrhea may need professional treatment including antibiotics or other medications and supportive care such as fluids or hospitalization.

vet examines dog
Image Credit: SeventyFour, Shutterstock

dogster paw divider

Conclusion

Seeing diarrhea in your new rescue dog can be worrying, but it is very common. Rescue dogs have everything about their lives changed in an instant, which can lead to stress and digestive problems. This commonly results in mild diarrhea that will often resolve in just a couple of days with some at-home monitoring.

If the diarrhea does not clear up in a reasonable amount of time or if you are worried about your new dog’s overall health, you should consult your veterinarian for advice and medication.

See also:


Featured Image Credit: MAD.vertise, Shutterstock

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Beauceron vs. Doberman: The Differences (With Pictures)

The Beauceron and the Doberman are similar in a lot of respects: the main coloring for both is the same, giving them a...

When Does a Pitbull Go into Heat? Vet-Verified Facts & FAQ

Female Pitbulls typically have their first heat cycle between the ages of 6 and 12 months, more commonly after 8 months. Like the...

Pitsky (Pitbull & Siberian Husky Mix): Info, Pictures & Care Guide

Created from American Pit Bull Terrier and Siberian Husky parents, the Pitsky dog is a medium to large mixed breed that inherits some...

Cairnoodle (Cairn Terrier & Poodle Mix): Info, Pictures, Care & More

The Cairnoodle is a mixed breed created by mixing the Cairn Terrier with a Poodle. They also have several other names, including Cairnpoo...

More related

10 Benefits of Running With Your Dog & Tips to Get Going

If you’re thinking of starting a running routine, whether for health reasons or just for fun, why not let your pup join in?...

RAWZ Dog Food Review 2025: Recalls, Pros & Cons

Review Summary The RAWZ pet food brand is relatively new and is making waves in the industry as one of the most committed...

Are Frogs Poisonous to Dogs? Vet-Reviewed Facts

Exploring the world around them is part of your dog’s nature, but their curiosity and prey drive can get them into trouble, especially...

7 Cockapoo Health Issues to Look Out For

There are many different health issues that can affect your specific breed of dog. The best way to treat your dog’s potential health...

Keep reading

KOHA Dog Food Review 2025: Pros, Cons & Recalls

Review Summary KOHA Pet Food manufactures premium food for dogs with allergies and food sensitivities. Several things set KOHA apart from most premium dog food brands. First, KOHA doesn’t sell dog food through retail stores like PetSmart or online retailers...

Dogster_KOHA Dog Food Review

Can Dogs Eat Crab Apples? Vet-Verified Nutrition Facts, Benefits & Risks

Have you ever been out on a walk with your pup in the fall season and seen tiny apples littering the ground? Those are crab apples (Malus sylvestris), an older version of European cultivated apple species. These small apples are...

Dogster-Can-Dogs-Eat-Crab Apples

Can Dogs Eat Passionfruit? Vet-Verified Nutrition Facts & Risks

On a warm sunny day, there’s nothing like enjoying some fresh fruit, and you might be tempted to share some with your dog. While some fruit is safe for your pets to sample, can dogs eat passionfruit? Unfortunately, passionfruit is...

Can Dogs Eat Passionfruit

12 Best Dog Foods for Pitbulls in 2025 – Reviews & Top Picks

Owning a Pitbull and another bully-type dog comes with its own unique set of challenges. One of the things you shouldn’t have holding you back from giving your dog the best life possible is choosing the right food. Pitbulls can...

pitbull eating

10 Best Dog Foods for Skin and Coat in 2025 – Reviews & Top Picks

You might have noticed that your dog’s coat is changing for the worse, and you want to do something about it. Like human hair, a dog’s fur is a good indicator of their health. If your dog’s coat needs a...

cream dog eating from the bowl

What Can Be Mixed With Dry Dog Food? 25 Vet-Approved Suggestions

If you’re like most dog owners, you want what’s best for your furry friend, including a healthy diet with plenty of nutrients and protein. But, should your pup eat only the same dry food day in and day out? Absolutely...

dachshund dog eating from elevated bowl

9 Best Lickable Dog Treats In 2025 – Reviews & Top Picks

The pet food world is ever-changing, and more products are flooding the market every day. What is growing in popularity in the world of treats? Why, lickable ones, of course. You can spread the treats on a lick mat, stuff...

woman sitting on sofa and giving treat cute pembroke welsh corgi dog

Thyme for Dogs: Our Vet Explains Potential Benefits, Uses & Risks

Thyme (Thymus vulgaris) is a popular spice that many people keep in their homes. You can even grow it in the garden or indoors to have a fresh herb to use in your dishes. Many people wonder if this herb...

Dry Organic Thyme Spice in a Bowl