I noticed one of the 3 week old pups I took in 2 days ago had a swollen right paw and lower leg. Today it's like 5 times the size of the other paws and it looks like it's filled with fluid. The lower leg is swollen as well.

Any idea what this might be? He was attacked and bitten by a dog a week ago, and has a big cut on his side that I've been treating. There are no vets locally though I can take the puppy to one 5 hours away.

I took this picture this morning but it looks even more swollen now!