Some body language of healthy and happy cats.

Not only does the behavior of cats tell us about their illness, their body language also gives us some clues.
Pay attention to your cat’s body language and nurture it to be a healthy cat. Some signs of a happy, healthy, energetic cat are:
Keep the tail straight
Rub your head with your feet
Feel comfortable around you
Bowing the head to receive affection
Sleeping with their stomachs facing you