taking on more responibility
Yes. It harms the family and friends of the drug abuser. Also, if anyone looks up to that person, they could do the same thing.
No, but she is a drug addict and animal abuser.
by getting to a rehab
disease of model of addiction
Please see the answer to "Characteristics of drug abuse in the workplace".
Often the best thing to do with a drug abuser is an intervention where those that love him or her tell them how the addiction is affecting them. Counseling or halfway houses are an option as well.
When a wolf is hungry, and it desperately needs food to survive, its behavior will change because it will be getting anxious and hungry. If it is "breeding season", the wolf will change its behavior to get a mate. He will attack other wolves to prove he's the strongest male and so he gets the female. A wolf may change its behavior if it eats a drug. When a wolf (or any animal) gets a drug, it may change its behavior in a big way, making the wolf go crazy or sleepy. Wolves may change their behavior when they are hurt or weak. They won't be as strong and they could feel more anxious, knowing they are hurt.