Reminds me of a scene depicted in The Expanse series (I highly recommend it). An evil scientist argues with a potential recruit and it goes somewhat like this:

If you were to develop medicine for horses what would you test on? Rats?

Why would I do that? Rats and horses are very different.

Right, we have a responsibility to minimize harm. Testing medicine for horses on rats would be inefficient and unnecessary. Now, what if you were to develop medicine for humans instead?

In the authors notes one of them mentioned that not being able to "solve" this argument is why they stopped pursuing a career in biology.