My dog is hyper and aggressive after vaccination. Is this normal?

I'm so sorry that Buddy isn't feeling well after his vaccinations. I would certainly recommend calling your vet to discuss his side effects and decide if he needs to be seen or not. When we give a vaccination, the stimulation of the immune system can cause an inflammatory process that can result in some joint or muscle soreness. Some dogs will also be lethargic and can run a fever. These side effects will generally resolve within 1-2 days, but sometimes we will recommend giving medications to make the pets feel better in the meantime, so I would recommend discussing it with your vet. For the future, I generally will only give one vaccination at a time to dogs that have the potential to have vaccine reactions to minimize the potential for this to happen again. Good luck! I hope that was helpful and that Buddy feels better soon. Thanks for using Petco Pet Education Center, formerly Petcoach.

Thanks for using Petco Pet Education Center, formerly Petcoach! Possible side effects after vaccines include pain at the injection site, lethargy, inappetence and general discomfort. This should subside within 1-2 days. If it does not improve or it worsens, have Boomer evaluated by a veterinarian for further assessment and treatment. Otherwise, Boomer will likely start feeling better shortly. Good luck and best wishes!

Thanks for using Petco Pet Education Center, formerly Petcoach! Possible side effects after vaccines include pain at the injection site, lethargy, inappetence and general discomfort. This should subside within 1-2 days. Good luck and have a good night!

Thanks for using Petco Pet Education Center, formerly Petcoach! Possible side effects after vaccines include pain at the injection site, lethargy, weakness, inappetence and general discomfort. This should subside within 1-2 days. If it does not improve or it worsens, have him evaluated by a veterinarian for further assessment and treatment. Otherwise, he will likely start feeling better shortly. Good luck and best wishes!

I'll bet Oliver is a cutie!! If he just had the vaccinations in the last few days, I think you right to watch him for reactions. If his energy seems increased, that is a good sign that he is not having a negative reaction! His sensitivity to noise is likely a coincidence, however I have had puppies that are a tiny bit sore after vaccinations and therefore a little more 'on guard' for a few days. If all else is normal, I would just monitor him at this time! I hope this helps!

Hi there! Thanks for using Petco Pet Education Center, formerly Petcoach! Lethargy, fever and inappetence can occur 24-48 hours post-vaccination. This is not uncommon. If it has been longer than this, it is likely unrelated to the vaccines that a good reason to have Saski evaluated by your veterinarian to ensure that there is not something else going on. Good luck! Have a good evening!

Hello there, and thanks for using Petco Pet Education Center, formerly Petcoach! I'm sorry to hear that Snapple isn't feeling well. It isn't entirely uncommon for dogs to feel sore and puny after a round of vaccines - just like people can. They can cause soreness at the area of injection and mild general malaise, which would explain Snapple's unwillingness to move and whimpering when you try to touch her. This will probably abate over the next day, but if you notice any other symptoms such as swelling, difficulty breathing, vomiting, or diarrhea, please call your vet as these may indicate a more serious reaction. This is very unlikely as most severe vaccine reactions occur within an hour of the shots, but it is always better to be safe than sorry. If she's still acting puny tomorrow, feel free to call your vet and let them know. They may be able to recommend or prescribe an anti-inflammatory/pain reliever that will make her feel much better. Do not give her anything over the counter as it may not be safe for her. Good luck, and I hope that Snapple gets back on her feet soon!