If your dog has a pimple on his neck after the injection, it may be caused by the medicine not being fully absorbed. You can help your dog gently rub it for a while or apply a hot compress with a towel. If it does not disappear after more than three days, it may be that the injection was injected into the skin or muscle. You need to take your dog to the hospital for examination to avoid inflammation, redness and swelling of the pimple. Some lumps will subside on their own, but if the skin becomes inflamed or ulcerated, they should be treated with medication in time. If the dog is older and finds that the lump is getting bigger, it should be sent to the hospital for examination.

Notes on dogs after vaccination:

1. Observe the dog for allergies after vaccination.

2. Do not change the environment or food, and pay attention to keeping warm, especially in winter.

3. It is best not to take a bath within a week after the dog is vaccinated. Bathing can easily irritate the dog, and it is also easier for the dog to catch a cold.