How is animal testing cruel?

No, despite what PETA says, the testing today is necessary in research. Such things as diabetic medications, new therapies for drug resistant viruses, and other medical research is vital to today's medical community.

Animal cruelty is torturing animals for kicks. This serves no purpose than to inflict pain on an animal for no reason. Animal testing is the second step in determining whether a drug or therapy will work on humans. The third step is clinical human trials.