How do you know you have a good catch dog?

I don’t believe I’ve ever seen one honestly. The one i use the most most people would’ve culled but it was because of his handle and h toward other dogs which still wasn’t perfect.Just a dog I had before I started. He’s regripped here and there and one day we had just caught a hog and I sent him to another bay and after I got to him inside the Briar patch with the about 120 pound boar he just let go literally feet away. The hog didn’t realize it and there was that split second there chief looked at me like he was gassed and thankfully my brother was there because he made it there that second as soon as I said uh oh he was about the only thing moving fast and he went straight through those wall of briars like a dozer and was right there besides me that second. Thankfully chief caught again land we killed the hog that whole story felt like minutes in real time but I bet it didn’t happen in 3 seconds.. I’ve went through a lot and seen a few good ones. Seems like solid white cds break bays more but I think it’s because they get seen a mile away. Quiet, handle, catch, and a touch of game that’s all it takes, for me at least.