Lump on dogs paw pad

Hi just wondering if anybody could give some insight into what this may be? it is a dry lump on my 2 year old Staffordshire bull terriers back paw pad. There is no blood or puss coming out of it. he doesn’t seem to be irritated by it, he will let us touch it and he is not licking, itching or biting at it. doesn’t look like it could be anything that has got stuck in his paw on a walk as when he’s stood it doesn’t touch the floor. thank you

Hello!  I can see a well-demarcated pink, hairless, possibly domed area at the junction between keratinised (pad) and haired skin.   You say that it is not itching or being bothered at.   A rough list of types of diagnoses might include fungal infection eg ringworm; non-itchy parasitic infection eg demodex mite; auto-immune diseases; cancers; hormonal skin disease and of course, all the inflammatory skin diseases eg pustule, inflamed follicle cyst etc.   Your vet will - either in their head or on paper - make a list of their own differentials (they will hopefully have a better picture of the owner of the foot and a closer look at the lesion than myself) and then come up with ways of distinguishing between them eg trial treatments or skin scrape or biopsies.  Because some of the tests may need time investment or possible anaesthetic, the ease of testing, funds available or even worst case scenario may dictate which avenue they explore first.  However, we would strongly reccommending considering tests especially if the lesion is tending to get bigger rather than smaller.  Only by idetifying the cause of the change, can an informed decision be made as to what best to do with it.  We would reccommend persuing tests or trial treatments at your vets' discretion.