Kees has acquired some fame by the name of "varkensfluisteraar", “Schweineflüsterer” or “pig whisperer”. He holds a PhD in Natural Pig Behaviour and gives lectures and training sessions about observing and interpreting pig behaviour around the globe. By carefully observing pigs, health and welfare issues can be prevented or solved. Kees has advised farmers and seen millions of pigs. He understands their behaviour, body language and sounds. He can analyze the pigs' physical condition and knows what their basic needs are, like their nutritional needs and preferences. He doesn't shy away from tasting their food for himself, straight out of the feeder. He also knows that factors such as water, housing, climate, light and overall management of the farm can have a massive impact. In this regard, Kees is hired regularly as a consultant or expert to screen farms throughout Europe and beyond.