Yes, it is possible for an animal to go crazy if abused.
After an animal has been abused the animal may be kept in the same living conditions and continue to get abused, the animal may also be abandoned, or it may be rescued by a humane socity like the A.S.P.C.A. Many animals may even be killed by the person that abused them. Hopefully the animal will be rescued by a humane socity and be adopted out into a new and nicer family.
No animal should be abused
It has been noted that animal abusers often come frome abusive backgrounds
A pretty good site is maes12.webs.com. They have a page called Animal Video/Picture Gallery and it has videos about not abusing animals
About 2 million animal's are abused per year. www.animal/abuse.org
it is a animal hospital for abused or hurt animals.
Signs that a cat has been abused may include physical injuries, such as cuts or bruises, fearful behavior, avoidance of humans, flinching at sudden movements, excessive grooming or self-harm, and aggression. It is important to seek help from a veterinarian or animal welfare organization if you suspect a cat has been abused.
We don't know the exact number, but there are millions abused.
The most abused wild animal must be the elephant. This is often poached by those who are engaged in ivory trade.
Most animals of the canine family are used for fighting, protecting proptery and sometimes for animal testing. The equine family has been abused for work, events, and for breeding. Those are just two of the many ways animals are abused.
Ketamine