What are arguments for and against medical testing on animals?

Some of the arguments for are that it saves human lives, humans are superior to animals and the animals do not know that its happening.

Some of the arguments against animal testing are its cruel to animals, animals have rights as well, you should treat animals the same as humans and theres alternatives out there to animal testing.

On one side you have the for the other against. The opposing position against probably says it is nessacary for the animal testing because animals are about the same as humans. On the against position animal testing is wrong because it can cause the animal deadly pain and diseases. But I think there should be a human in the place of an animal because animals have feelings.