Should we experiment on animals?

We have to test drugs on animals. Obviously, new drugs have a lot of risks. So the manufactures have to find out those risks. As a result, the test is necessary to people.
But the problem is the people who love animals are against testing drugs on animals. Paradoxically, they also like to eat meat. They kill animals just because  they are hungry! I think they can't really protest against testing on animals.

John

Shut up zoos, not animals

You may think that visiting a zoo is harmless fun, but you’re wrong because zoos are just prisons for animals. The difference is that prisoners get out after a few years!  Animals in cages look bored and are boring to look at. After all, we all know what an elephant looks like, we’ve seen them on TV. So why make animals suffer by shutting them up for our entertainment? Shut up zoos instead.

Source: Palmer, G. (2008) Real Writing 2, Cambridge University Press, p40