Q. my dog has got a lump beside her tit swollen

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A. This could be a lot of things, however mammary tumors are very common in older unspayed dogs. The chance of getting them increases quite dramatically with every heat cycle. I'd recommend getting this checked out immediately - your vet can take a sample of the cells inside the lump with a needle and then examine them under a microscope, which will hopefully tell you what it is and how to proceed.

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