Depends on what the progress is (what field, what extent, etc.) and suffering (amount of being suffering, how much they suffer, etc.).
If you ask me, it right to test cosmetic products on animals? I believe not. Animals should not suffer merely for advances in the cosmetic industry.
But do I think it's acceptable to test an AIDS vaccination or -cure on animals? Absolutely. I don't like animal abuse (I even care about insects
!), but I put human lives above animals' lives any day.
You get my drift.
I explained to my teacher in a full essay that the question was impossible for me to answer truthfully.
It'd be for me too, to be honest, simply because it's too broad. The best I can do is answer in the way I did above ("it depends on...").