What Should I Do For A Split Nail On My Dog's Paw?

For split nails in your dog, trim the nail to maximum but avoid the pink area where blood supply is present. He will be all right after few days. If the nails are torn or loose then take your dog to vet because he can develop infection.
To avoid split nails in future, trim nails regularly. Long nails can cause many problems. Purchase a trimmer from pet store and trim the nail up to just before pink area.

Depending on the kind of activity your dog does it can take up a couple of weeks 2-3

Your dog will NOT bleed to death from any of the toenails.  When dogs brake toenails the quick (blood vessel) becomes exposed and bleeds.  This exposed blood vessel can be an entryway for bacteria.  This can lead to infection.  Have your dog seen by a veterinarian to remove the nail fragment, clean the toe nail remains, apply a bandage, prescribe pain medication and if needs antibiotics.  Broken toenails are very painful for dogs--there are a lot of nerve endings that are exposed and hurt. 
To attempt to prevent broken toenails trim your dog's nails regularly.  Some dogs needs their nails trimmed on a weekly basis.  Your veterinarian can demonstrate nail trimming and give you a lesson.

Nails on a dog are very sensitive. Wrap an absorb ant towel around it, and call and ask your vet what kind of disinfectant to use or if you need to use any at all. The nail will bleed awhile. If your dogs nail is still twisted, I recommend you take him/her in. Best of luck!

About two weeks

A couple of weeks

You should first thy to clip it and if you don't have the special nail clippers than take your dog to the vet

Have you tried superglue? Just have someone hold his head away while you use a little bit, as he wont like the fumes. This should hold till you get him in.

Try to trim it as best you can to eliminate extra nail, and then you can tape it or even super glue it, it wont take long for it to heal. Try adding biotin to the diet.

My GSH pointer has a nail(front pay) where the pulpy quick had seperated from the nail.  She gets this a couple of times a year but this time it doesn't seem to be healing.  We keep that nail as short as we can. It is always the same nail. What do you suggest?

My advice is to just let it heal...but you can probably take him to the vet if it looks pretty bad.

I would take it to the vet because it might happen again and it might cause some injuries in the leg and the vet will be able to fix once you notice it.
 

If the dog cracked it all the way down the middle then you probably want to take it to the vet because it will take awhile for it to heal. But if it isn't that bad then it would probably take a couple to at least 5 weeks. If it takes longer than that would mean you probably want to take it to a vet.