It's cruel and devoid of humanity, there are other alternative without the need to use animals in experiments and tests on animals that are unreliable and cannot predict the results in humans.
It is cruel and inhumane other alternatives without the need to use animals in experiments and tests on animals are unreliable and can not predict effects in humans.
It is cruel and inhumane another choice. Without the need to use animals in experiments and tests in animals, unreliable and cannot predict the effect in humans.