Are Entertainment Animals Really Given The "Movie-Star Treatment"?

I want to know how everyone feels about animals that are used in movies. Some people may not give it a second thought, however there have been multiple movies in the last decade who have used animals in their films, and some of these animals have died. For example, one of the horses that was being used in the 2005 movie Flicka died when one of the "well-trained" animal handlers lost control of the horse. AHA, the American Humane Association, is supposed to have a key objective in mind; the safety of animals. I understand that accidents can happen but I consider it very negligent to put the lives and safety of many smart and wonderful creatures in the hands of people who are careless and sloppy about their work. In order for the entertainment business to use animals in their films, animal handlers must take classes and receive special certification to ensure the best possible treatment is given to these animals. Perhaps AHA is slacking off. I feel as though AHA is not being held at a neccessary standard. I need someone to please prove me wrong!