Cats have scent glands all over. Rolling leaves their scent on surfaces. This marks territory.
Scent Marking
Rolling, flipping exposes their belly. This shows trust and invites social interaction.
Communication
Flipping and rolling let cats scratch their back on surfaces. This removes loose fur and feels good.
Scratching
Rolling and wiggling stimulates cats' prey drive. They often do this when playing.
Play
Cats roll on their backs to get comfortable. It feels good to stretch and rub against the floor.
Comfort
Exposing their belly while rolling and flipping releases heat. This cools cats down.
Temperature Regulation
Cats often knead with their paws while rolling around. This motion replicates nursing and relaxes them
Kneading