I have a 2 year old female German Shepard and she stays in a fenced in backyard. Well today I noticed that she was limping so I thought okay maybe she step on something or she had sprained her foot. I examed between her toes and on the bottom. It is very red but no blood. Her foot on the otherhand is so swollen i kid you not it is twice the size of her other front paw. I have no money to spare at this time I didn't find any marks to indicate that she had been bitten or anything so I am clueless.