WARNING: This is not pleasant.
When I went to Hong Kong, I really had to bite my lip walking through the markets. The common theme was to show how fresh something was by seeing its guts hanging out. With fish, they were often kept crammed into shallow plastic crates (aerated to keep them alive for longer), with a couple at a time being scooped out and left to flop about on the chopping board before swapping them over for another one or two. They also tended to leave one dead fish out for show, sliced straight down the middle, guts and all.
It's far better than eating them alive, but still cruel as hell.
WARNING: The next bit is about cats.
An image that still haughts me from a TV show I watched years ago, was watching as a small kitten hoisted up with one of those poles with the loop of rope to go over the neck. It was dunked into boiling oil, then hoisted back out by the neck after a few seconds. Still breathing, it's skin was stripped off, then they cut the head off and carried on with cooking it.
If they're going to eat cats, why the hell couldn't they cut the head off first!