But isn't having an animal in the laboratory for its whole life cruelly keeping it from its natural habitat? Again, where do you draw the line? Isn't domesticating a dog, a cat, or a rabbit preventing it from running freely in its natural habitat just so a human can own it and experience the pleasure of having a pet also cruel?
However, the balance of nature can be destroyed if endangered species are used for scientific experiments, and for this reason they should not be used unless it is completely necessary. Our right to use nature does not give us the right to destroy it.
It is a shame that animals have to be used for any scientific experiments, but until another way is found, I can see no other way to find cures to diseases that affect both humans and animals. No one should be happy about this necessity, and we should strive to find other methods.
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