People have tried for years to change the conditions for farm animals, the trouble is that it has to go through the European Union (EU), and countries like France and Spain are very much against.

If we take a space like a soccer field, it can hold 220.000 chicken.

Lorries transport animals from country to country to where the best prices are. Often these animals are transported over days without food or water.
In Switzerland it is allowed to eat dog (you have to kill them yourself).
Muslims and jews cut the throat on farm animals and let them bleed to death.

So the journalists probably wanted to give people a wake up call to show the double standards.
They did not have the cat killed, the cat was killed by a farmer, who had way to many cats. The cat was shot and died instantly.