Lump on my dog's testicle

Hi I noticed a lump on my pocket bullies testicle . It's very prominent. Hes a healthy 3 year old. It's not swollen or red or painful. But now that I took pictures it looks like there could be two of them.

Hi - I have answered your question on the one with the pictures but just to add, that if what I'm saying doesn't ring true - if you find yourself thinking, 'thats not the lump I meant,' then once again, please take this seriously.  While what you are describing sounds like a normal or inflamed epididimis, dogs do get testicular cancer.

An inflamed epididimis (or a pair of them) can still be very significant and nedds to be checked.