Gir has a lump which keeps growing on his back right leg at the joint. I popped it with a needle and blood came out and filled back up. Any thoughts. Going to the vet would be an option (I am unemployed at this time and can't afford to take him). His eating, pooping and activities are normal and the blister doesn't seem to bother him, but its bothering me with questions. Any thoughts, suggestions, etc.