Yikes! I m so sorry to hear about the fight. I hope the pooches are OK. Be sure to clean the cuts very well, and look extensively for injuries. There may be bites or scartches where you can't see.

I have seen many male dogs living in harmony in the same household. I think it has to do with how dominant the dog is. It looks like Smokey is growing up and Pork Chop may feel like his position in the Pack is changing.

Have they fought anytime before? Are they ever aggressive towards each other? What and who started the fight.

I think KYS' advice is good. Feed them separetly and keep toys chewies, etc... out of their reach.