Hi, I can help you with your question today.
Can you describe the size of the lump that you are feeling?
It's about the size of a small pea.
Do you know if he is microchipped?
Yes, he was microchipped by the RSPCA
It is possible that what you are feeling is the microchip with some fibrous tissue around it.
They can scan him at the vet tomorrow and determine if that might be the case.
You are also correct in thinking that it might be a local reaction to a vaccine injection.
We can also see these, appearing as much as 1 week after the vaccine.
Generally these will resolve on their own within one month. If they persist or seem to be getting larger, then I get concerned that we should investigate further.
We would not be able to palpate a disc like that, so no worries about his spine.
This is very likely a benign issue.
Can I answer further questions for you?
Bill had his vaccination on 17th of November, so that's well over a week ago. I will take him to the vet tomorrow. Thank you very much for your advice, it's put my mind at rest.
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