I once got to go behind the scenes at a zoo, including their vet’s operating room. They had a bunch of interesting stories about how they tranq and operate on different animals of various sizes, but the worst experience they had was with an otter.
Poor little guy woke up partway through surgery, panicked, and went fucking berserk. Those little claws left gouges a foot long and an inch deep in the vet. And then, because they’re so small and fast, trying to re-anaesthetize it was a huge pain.
Anyways, I think about that story a lot when I hear about otters.