Pros and cons of animal testing

Consider the pros and cons of animal testing. Should it be allowed.
I think that animal testing should not be allowed for testing out makeup but for testing at out medical reasons it should because it may save people's lives and if it means we have to sacrifice an animals life to save human beings then it is okay. But if you're doing animal testing and you keep trying the same disease and it does not work you should stop and what people say are not true Bayern not treated nicely. The people who test on animals somatic and swear at them. They make the animals go insane because they're not treated well. The cages are not clean. They have little food to eat and little water to drink. Animals die a painful and slow death