Well, first off you need to be thankful that they caught instead of just smelling a hog and then wandering off...
Sounds like you have the makings of some good hog dogs.
You need a bigger hog so the pups can learn to respect a hog otherwise they will get cut up bad or killed when they finally meet up with a big bad boar in the woods.
Also a bigger hog would get the pups to baying. Leave the Dogo out for now because he will encourage the other pups to catch.