Crazy Dog Ladies, who are they, do they do any good?

One lady adopted 27 dogs she saw on dogsindanger.com, another divorced her husband because he would not sleep in bed with their four dogs! Crazy right? Some call them 'crazy dog ladies' women who go off the deep end for animals and never come back. Who are they? How does it happen? Do they do the animal cause any good? The dogsindanger radio hour analyzes crazy dog ladies.