I just started playing The Witcher 3 and was running through the achievements and I see one of the achievements is the Moo-rderer which becomes unlocked when you kill 20 cows. I read that in a previous version, players would just kill cow after cow for easy money and The Chort mob was added to attack the player and it would keep respawning if it was killed.

Does The Chort spawn and attack you if you try and get the 20 kills for the Moo-rderer achievement and if so than how do you unlock this achievement or does it even unlock?

I decided to test this out myself and no Chort. I killed 20 cows, got the achievement and no Chort.