Bringing home a new dog is one of the most exciting times for a pet parent — there are so many fun experiences to look forward to. Your pup, on the other hand, may experience some anxiety before they've fully adjusted to their new digs. Unfortunately, this stress can sometimes lead to nasty tummy problems and other behavioral issues.
If your new dog suffers from stress and gastrointestinal (GI) issues, don't worry — a dog's anxiety, and even diarrhea, is very common.
Why Is My New Dog Anxious?
You may be surprised that your new furry friend is anxious. After all, you've been preparing for his arrival for weeks, and he has all of the love and toys he could want. But dog anxiety is a common issue, especially when confronting the unknown (in this case, you, your home and/or your family).
Your new pup may also be shy and, depending on his background history and temperament, a little nervous. In addition to the environmental changes, explains Pet Hub, anxiety can be caused by overstimulation (too much play and too little rest), fear-based stimuli (new spaces, other dogs, fireworks, thunderstorms), generalized anxiety and illness. Be sure to give your new dog ample exploration time and establish strict boundaries, especially if you have a young pup that's full of energy.
Unfortunately, a dog's anxiety is often mistaken for behavioral issues, which is the number one reason why dogs are returned to the shelter. Understanding this, and preparing yourself will help the relationship get off to a better start and hopefully last in many years of happiness for both of you.
A Note on Separation Anxiety
Dogs become attached quite quickly to their humans and may suffer from separation anxiety, especially in their early days living with you. According to the American Society for the Prevention of Cruelty for Animals (ASPCA), one of the most common issues faced by new pet parents is that their newly adopted dog exhibits destructive behavior.

If your dog eats your shoes or shreds your couch cushions, it doesn't necessarily mean they have bad manners, says the ASPCA. In many cases, your fur baby is demonstrating separation anxiety. Other signs your dog might be dealing with separation anxiety include:
- They become agitated when you prepare to leave.
- They seem anxious or depressed when you're preparing to leave or when you aren't there.
- They try to prevent you from leaving.
To stop your new pup from destroying your rug, don't let him roam free when you leave them home alone, and avoid being gone for long stretches of time. It's best if someone can be home with them for the week after you bring them home.
Dog Anxiety and Dog Diarrhea
Much like their humans, dogs experience digestive issues as a result of stress. But why? "Stressful situations cause a release of norepinephrine — the 'fight or flight' hormone," explains Deb Eldredge, DVM, for Fear Free Happy Homes. A dog's response to this hormone can vary but often includes diarrhea. Dr. Eldredge emphasizes that pet parents "need to understand that stress diarrhea is not a conscious reaction by your pet." The GI tract in a dog's body is responding naturally to the stimuli of stress and anxiety.
Dog diarrhea falls into two categories, says the Pet Health Network — small bowel or large bowel. Small bowel diarrhea usually appears in large volumes or is watery, and often leads to dehydration. Large bowel diarrhea tends to appear as small amounts of soft stool, and may be bloody or contain mucus.
Pay close attention to your dog's excrement so that you can give your veterinarian as much detail as possible, which will help them create a treatment plan.
