Animal experimentation

I'm reading "Animal Liberation" by Peter Singer and finding it an extremely compelling read. He writes very clearly and his arguments are very accessible for an ordinary person like myself. I haven't read much about animal experimentation so have found his chapters on the topic utterly devastating. The horrors, the innumerable torture and cruelties that we have devised to administer to countless millions of animals in the name of science and human well being astonishing. Most of these studies are clearly pointless, poor science, loaded with contradiction, irrelevant and repetitive. Peter Singer seems to say that things are better for animals, but I wonder. I think more experiments are being done on mice and rats than ever. It's truly horrible.