Cleanliness is key. Keeping the udders clean before milking helps in preventing contamination of the milk. And being able to recognize any signs of illness or injury in the cow's udders can also affect the milking process.
First, make sure the cow is in a clean and calm environment. Then, wash the udder thoroughly with warm water. Next, gently grip the teat and start milking in a rhythmic motion.
The origin could be from people's fear of the unknown in nature. Maybe they heard strange animal sounds in the wild that they didn't understand, like a lizard's tongue flicking which could be the 'lick lick' sound, and their imagination turned it into a scary story.
The lion and the cows' story is an interesting one. It goes like this: there are these cows in a meadow. A lion comes along. He's very sly. He first tries to make the cows think he's one of them, or at least a harmless creature. He might even offer to 'protect' them from other threats. The cows, not being very good at seeing through his trickery, start to rely on him. But as time passes, the lion gets hungrier and hungrier. One day, he finally attacks the cows. This shows that we need to be really careful about who we trust. We can't just believe someone because they seem nice at first. There are many hidden motives that people (or in this case, animals) can have.
Once upon a time, there was a dark forest. In this forest, there was a strange creature that made a 'lick lick' sound as it moved through the underbrush. A hiker got lost in the forest and as night fell, he heard that 'lick lick' sound getting closer and closer. He hid behind a big tree, his heart pounding. Then, he saw a pair of glowing eyes and a long tongue that seemed to be tasting the air with every 'lick lick'. The hiker was so terrified that he couldn't move, but luckily, the creature moved on after a while.