This here hog can "clear the savanna after every meal", it will however, be quite a large meal indeed. Also breed them so when you have a baby you can scream "WHEN HE WAS A YOUNG WARTHOG!"

They will use their healing move in the wild and this actually makes taming these burly beasts much easier preventing accidental deaths and making them hungry leading to a 30 second tame

I said I was unarmed and damn pigs still shot me.

Use Traq arrows to knock because it will take more damage and forces it to heal itself and as a result draining more food. This will drastically decrease how long it takes to tame.