In The Call of the Wild, how does the dogs’ owner at the beginning of the selection differ from Hal and Charles in how he feeds the dogs?

He feeds the dogs too little, while Hal and Charles feed them too much.
He regularly feeds the dogs the right amount of food, while Hal and Charles do not.
He often feeds the dogs too much, while Hal and Charles feed them too little.
He usually feeds the dogs a double ration, while Hal and Charles do not.