Fwiw I have been assured that Big Pharma will swap out a set of mice (or whatever the test species is) as a way to find the results they're looking for. This was told to me by someone who does research for Big Pharma. Someone who I have no reason not to trust.

But how can we trust you to tell the truth about this?

My personal motto is:

Don't be evil.

Does that help? ;)

Google has the same motto, and we can see how that's going...

It’s Alphabet now, they don’t have that motto ;)