Robbie was out for an afternoon run and when he came back in he tracked blood all over the house. He has torn the toe nail off of his hind foot.

OUCH!! I have the bleeding stopped and he is resting.
My question is, will his toe nail grow back normally? The quick is gone completely and nothing is left. Other than infection, is there anything I need to watch for? His nails were not long as I had just trimmed.
Now I need to mop up the blood.