Animal studies are a requirement in drug development. It's a very unpleasant fact.
Pharma have, for at least the last 30yrs, been actively seeking to replace animal models with in vitro set-ups. Scientists are awarded prizes for coming up with new innovations to replace animal models and any animal work is heavily licenced and regulated
Animal models are a stepping stone from work using cell culture to human - the final step to monitor safety, toxicity, efficacy in a whole system before first time in man clinical studies.
How would you cover those tests otherwise, if animal models were scrapped completely? Go straight into willing volunteers? That's a huge ethical minefield.
I've seen the petition and would support it, but I'm aware that reducing animal testing and devising innovative ways to replace it has been happening with some success for a long time.
It's still a regulatory requirement though, and it's an extremely complex field - disease target and drug class dependent.
I've known scientists who work with animals and they are very mindful and respectful of what they do, which they do in the most limited and thoughtful way possible.
I don't know anyone who wouldn't be keen to scrap it completely, but it has to be replaced with something that fulfils the same task - it is happening in places, but a whole system model is a bit like the holy grail.
Sign the petition by all means, but it's not going to affect anything that's not already happening, and a complete ban is impossible at the current time.