Why were Hal and Charles such bad owners? What happened to the dogs while under their care describe in 40 words

Charles, Hal and Mercedes have become so "civilized" that they are unable to adapt to new conditions. They are not fit to survive in this world, and it is tragic that their unsuitability must take the dogs down with them. They betray their dogs by leaning on them too hard and by not ensuring that they have enough to eat.