Sore on foot

Hi all.. my black lab started with a little sore on his back paw yesterday. I cleaned it with some cleaning solution I had from a previous paw cut and bandaged it overnight. It looks better but he won’t walk on it and is constantly licking it. Can anyone advise what I should do or what it could be. TIA 👍🏼

Hello!   There are a lot of things that it *could be,* from a mammal bite wound to a foreign body entry hole, to a glass / rock / litter cut, to an insect bite, bee sting, adder bite (which would be an emergency, btw) etc.  My best hypothesis is that a small grass seed or similar - perhaps one of those with a sharp point, dragging some little hairs behind it - has entered the foot.  In those cases, swelling and infection usually follow.  Vets sometimes give antibiotics and anti-inflammatories to make the pain and swelling go away, but if there is a grass seed in there, it often recurs, perhaps having moved a little within the foot.  Therefore, it would be a good idea to get this checked out by a vet and talk through the options.