Bringing home a new pet is exciting, but it can also come with some challenges—especially when it comes to their health. One common issue for newly adopted dogs and cats is stomach trouble, like diarrhea or vomiting. If your furry friend is showing signs of a stomach upset, don’t panic! These problems are often normal and treatable. This guide will help you understand what’s going on and what you can do to help your pet feel better.
Why Shelter Pets Often Have Stomach Problems
Dogs and cats that come from shelters may have been around many other animals. In these environments, it’s easy for illnesses like parasites and viruses to spread. Many pets already have these bugs when they arrive, or they pick them up at the shelter. Even though shelters do their best to keep pets healthy, some stomach issues can still happen once your new friend comes home.
Common Causes of Stomach Issues in New Pets
1. Stress from Moving
Shelters can be loud and stressful. Even after getting adopted, pets need time to adjust. Stress affects their stomach and can cause diarrhea or vomiting. Give them time and a quiet space to settle in.
2. Sudden Food Changes
Switching pet food too quickly can upset your pet’s stomach. Shelters may feed whatever food is donated, so pets don’t always get a consistent diet. Once you bring them home, try to find out what they were eating and stick with it for a while. If you need to change food, do it slowly over 7–14 days.
3. Parasites and Infections
Pets in shelters are often exposed to parasites like roundworms, hookworms, and giardia. These bugs can cause diarrhea and other stomach problems. Your vet can check a stool sample and give medicine to treat the issue.
What You Can Do to Help
Transition Food Slowly
If you want to change your pet’s food, mix the new food with the old one gradually. Start with 75% old food and 25% new food, and slowly change the ratio over one or two weeks.
Use a Bland Diet for Upset Stomachs
If your pet has diarrhea, try feeding plain white rice with boiled chicken for a few days. This gentle food can help calm their stomach.
Get a Vet Checkup
Visit the vet soon after adopting. Bring a stool sample so they can check for parasites. Your vet can also give advice on food, medications, and how to handle any health concerns.
Never Use Human Medicine
Never give your pet medicine made for humans without checking with a vet. Some drugs that help people can be very dangerous for animals.
When You Should Call the Vet
Sometimes, stomach problems go away on their own. But if your pet shows any of these signs, call your vet right away:
- Constant vomiting
- Blood in stool
- Not eating for over a day
- Low energy or sleeping too much
- Bloating or signs of pain
Better safe than sorry—your vet can help make sure nothing serious is going on.
Frequently Asked Questions
Q: Is it normal for a new dog to have diarrhea?
Yes. It’s common due to stress, food changes, or parasites. Most cases are mild and treatable.
Q: How long does stomach trouble last?
It depends. Mild cases last a day or two. Parasites or viruses may take longer, even up to a few weeks.
Q: What does stomach upset look like in pets?
Diarrhea, vomiting, not eating, or acting tired. If it lasts more than a day or gets worse, call the vet.
Q: Can new food cause a cat to get sick?
Yes. Changing food too fast can upset a cat’s stomach. Always switch foods slowly.
Q: What is an inflamed GI tract in cats?
It means the stomach and intestines are irritated. It often comes from stress, food changes, or infections and can usually be treated by a vet.
Final Thoughts
Adopting a pet is a big step filled with joy and new routines. But it’s also normal for pets to have some tummy trouble during the transition. Shelter life, stress, and new food are all common triggers. With some patience, proper care, and a quick trip to the vet, most pets will recover quickly. Remember, you’re giving them a fresh start, and a little extra love and attention goes a long way.
