I am very worried about my sweet new puppy. I had him vaccinated yesterday, for all the usual dog illnesses, and while the vet warned me there could be short time reactions to the vaccine cocktail, just like with humans, I had certainly not anticipated that there would be a huge lump on his neck! Here is it, and he is behaving very off as well, and sleeps a lot. What do I need to do now?
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I wouldn't worry if the lump is right on the spot where your puppy received the vaccine. This does sometimes happen, and the swelling should go away within a matter of days. Sleepiness after vaccines is also not uncommon - don't forget that vaccines do work by injecting a small sample of a disease into the bloodstream to allow the body to form antibodies against that disease, so being ill after a shot is quite normal.
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