My own opinion
Ask the experimenters why they experiment on animals, and the answer is: "Because the animals are like us." Ask the experimenters why it is morally okay to experiment on animals, and the answer is: "Because the animals are not like us." Animal experimentation rests on a logical contradiction.
~Charles R. Magel
If we cut up beasts simply because they cannot prevent us and because we are backing our own side in the struggle for existence, it is only logical to cut up imbeciles, criminals, enemies, or capitalists for the same reasons.
I strongly support the imbeciles part.
It is inexcusable for scientists to torture animals; let them make their experiments on journalists and politicians.
Vivisection is a social evil because if it advances human knowledge, it does so at the expense of human character.
~George Bernard Shaw
I am not interested to know whether vivisection produces results that are profitable to the human race or doesn't.... The pain which it inflicts upon unconsenting animals is the basis of my enmity toward it, and it is to me sufficient justification of the enmity without looking further.
Enough said. Vivisection is the most gross and hateful kind of experiment in the whole world.
I abhor vivisection with my whole soul. All the scientific discoveries stained with innocent blood I count as of no consequence.
I think animal testing is a terrible idea; they get all nervous and give the wrong answers.
I had bought two male chimps from a primate colony in Holland. They lived next to each other in separate cages for several months before I used one as a [heart] donor. When we put him to sleep in his cage in preparation for the operation, he chattered and cried incessantly. We attached no significance to this, but it must have made a great impression on his companion, for when we removed the body to the operating room, the other chimp wept bitterly and was inconsolable for days. The incident made a deep impression on me. I vowed never again to experiment with such sensitive creatures.
~Christian Barnard, surgeon
IMHO--his first mistake was to even think about it, to even consider it--the idea of cutting out one's heart in behalf of a mere experiment--worth checking out. But that's just me, apparently.
If you have to kill an animal, do it quickly and with skill, so that the animal suffers as little as possible.
But it might as well be me.
During my medical education I found vivisection horrible, barbarous and above all unnecessary.
~ Carl Jung, MD