After your dog receives their vaccinations, you may see some changes in their behavior. In this post, our veterinary team in Rabun County explains how a dog's behavior can change after vaccination (including rabies and other vaccines) and addresses common concerns pet parents may have.
Vaccinations & Your Dog's Health
Keeping your dog's vaccinations up to date is likely on your to-do list as a responsible pup parent. Vaccinations are our most effective tool we have to protect your pet from a variety of contagious, sometimes deadly, illnesses. Our veterinarians recommend vaccines as an important element of your pet's annual health plan. While some people may be concerned about the safety of vaccines, our vets believe that the benefits outweigh the risks for most dogs.
Your dog's behavior may change after getting vaccinated. Here are some common behavioral changes we see in dogs and some reasons they occur.
Common Behavior Changes After Vaccinations
After getting their shots, many dogs may display temporary changes in behavior that vary from dog to dog. While these changes may worry you, keep in mind that they are normal.
- Decreased Appetite – Vaccinations can temporarily impact a dog's appetite. If your pet seems less interested in eating soon after receiving shots, it is often nothing to be excessively concerned about. Make sure your pup has access to fresh water and monitor their eating habits. If the reduced appetite persists for more than one or two days, consult your veterinarian.
- Mild Discomfort – Sometimes, dogs may experience some soreness or discomfort at the injection site. They may display sensitivity if touched or avoid putting weight on the affected leg, especially if the vaccine was administered on or near the leg. However, this discomfort typically disappears within a few days.
- Lethargy – Some dogs may experience lethargy or fatigue after vaccinations. This is a natural response as the body diverts energy to build an immune response to a particular infection. It's important to allow your dog time to rest and recover during this period.
Changes in behavior after vaccination are more common in puppies than in older dogs. This is because puppies' immune systems are still developing, and may react more strongly to a vaccine, which leads to temporary changes in behavior like increased restlessness or lethargy.
Factors That Contribute to Behavioral Changes
Different factors can result in your dog or puppy to acting weird after their rabies, or other, vaccinations and shots. It's important to consider these factors when assessing your dog's response to the vaccines they've recently received:
- Vaccine Components – Vaccines contain certain elements like preservatives or adjuvants that make them more effective and increase their shelf life. However, some dogs may experience allergic reactions to these elements, which may trigger noticeable changes in their behavior. Therefore, you should talk to your veterinarian about any concerns you might have to ensure your pet receives the appropriate vaccines.
- Anxiety and Stress – Veterinary visits, including vaccinations, can induce anxiety and stress in dogs. Strange environments, unfamiliar people or anticipation of discomfort can cause temporary changes in behavior. Gently reassuring your dog and using positive reinforcement can help alleviate stress during your pup's next appointment.
- Individual Sensitivity – Some dogs may be more prone to behavioral changes, while others may not display any changes in behavior.
Should I be worried about behavioral changes in my dog following vaccinations?
It is not uncommon for dogs to experience mild behavioral changes following vaccinations, such as those listed above (lethargy, decreased appetite, or soreness at the injection site). These symptoms typically resolve within a day or two and are considered normal reactions to the vaccine.
When to Seek Veterinary Advice
While most behavioral changes after vaccinations are normal and resolve within a few days, some situations may require veterinary attention. Contact your veterinarian if you notice any of the following:
- Allergic Reactions - If your dog exhibits signs of an allergic reaction, such as excessive swelling, difficulty breathing, or vomiting, seek emergency veterinary care. Severe allergic reactions are rare but can be serious.
- Uncharacteristic Behavior - If your dog displays unusual behavior that is not related to the common changes mentioned earlier, it is advisable to consult a veterinarian. The veterinarian can determine if the behavior is caused by vaccination or another health concern.
- Severe or Prolonged Behavior Changes - If your dog's behavior changes are severe (such as a puppy being incredibly hyper after vaccination for an extended period of time), persist for a long time, or worsen over time, consult your veterinarian. These changes could indicate an adverse reaction or an unrelated underlying issue.
Are vaccines right for your dog?
Most dogs may exhibit minor changes in behavior after receiving vaccinations. However, these changes are typically nothing to worry about. By understanding the purpose of vaccinations, being mindful of any potential changes in your dog's behavior, and taking good care of your furry companion, you can ensure that your dog remains happy and healthy.
If you have any concerns about vaccinating your dog, it's best to speak to your veterinarian. They will consider your dog's individual health, habits, and potential risks to help you determine whether vaccinations are the right choice for your pet.
Note: The advice provided in this post is intended for informational purposes and does not constitute medical advice regarding pets. For an accurate diagnosis of your pet's condition, please make an appointment with your vet.