Animals also have emotions and feel equal pain as humans. We should stop all pharmaceutical companies from doing trials on innocent animals.

Animals are also the part of ecosystem that help to stable the environment by process of decomposition,perspiration etc.In the recent past,they are also used for research purpose that lead to different mutations in the genetic makeup of animals and cause their deaths.
Animals also have emotions like humans, they feel the pain,the can smell etc.Different testing labs use animal as a model and perform experiments without noticing the effect of experiment on animal life.whether the animal survive or leave the world.The testing lab conduct experiment without reluctantly and threatning the animal life style.These practices are against the law .
So,the labs should adopt alternate path for experimental trials e.g on cell lines to save the lab animals.