What kind of "agreement" was it, and why would the father be "going to the media" to have it enforced? Why isn't he going to the police or to court? The article says it was done in conjunction with the police. If so, then the "agreement" must have some legal validity and can be enforced. If it is a legal agreement and the owner of the dogs refused to honor it, he could have his bank accounts and property seized to pay it off, and yes, he could be sent to jail.
As for the incident, I read that son was fishing, which is attempting to hook fish in their mouths, drag them through the water, stick a rope through their mouth and out their gills, and leave them floundering around in the water in an attempt to keep them alive so they can then have their bellies slit open, their organs removed, and finally left to die.
So, I don't have a lot of sympathy for the son being attacked by some dogs.