I can't really tell the difference whether one is hotter than the other. The bigger testicle looks like a punching bag comparing to the other one I normally see. The inflamed one is warmer although the normal looking one is warm also. He's running around like nothing is wrong with him. Am I the only one whose worrying for nothing. I will get in touch with the Vet tomorrow morning and see. I also gave him a box filled with hay. Maybe I should switch to sweet hay soon to encourage him to eat it.