Cat stepping on breast milk is an Oedipal manifestation of cats. It is an instinct of kittens in their childhood to increase the secretion of milk from the mother cat. The cat suddenly stepping on the milk may be because the cat is very happy and relaxed at this time, so it is comfortable to step on the milk. It’s also possible that cats are de-stressing, which is how they reduce their own stress when they are in a highly tense or stressful situation. ​​​​​​​ For many adult pet cats, stepping on milk is no longer just a simple physiological expression, but has gradually become a way to express relaxation and joy, and to miss the days with their mother cat. And generally, the phenomenon of adult cats stepping on milk mainly occurs in male cats and neutered female cats.