What’s the worst thing you’ve done to mouse in testing? and why did you do it?

Question: What's the worst thing you've done to mouse in testing? and why did you do it?
- Keywords:
  mouse,
  testing
Asked by anon-182049 to Helen on 22 Jun 2018.
- Helen Cooper answered on 22 Jun 2018:
  
  The thing I dislike doing the most is taking pups (baby mice) away from their parents at a young age. Some of the studies carried out are looking at development so the pups are very important. It makes me sad when the mum is looking for her babies 🙁

Question: What's the worst thing you've done to mouse in testing? and why did you do it?