Normal cat droppings are dry, strip-shaped or spherical, and will not stick to the body. Unless the cat is very stupid and can't bury shit, it will step on its feet.
If your cat's poop is shapeless, toothpaste-like, or even a pool of swill, it's not normal. There are many reasons for this. It may be that the cat has poor digestion and can't fully absorb food, or it may be food poisoning. At this time, we can feed the cat some probiotics or yeast tablets. If the cat has severe diarrhea, it needs to see a doctor.