A lot of dog owners are unaware these glands even exist probably because many animals don t have them.
Puppy rubbing belly on floor.
If you suspect this you can probably use a little benadryl.
The dog is off color or seems in pain.
A tumor grows quietly often undetected until it blocks drainage from the sac.
Most vets recommend 1 mg per lb of dog every 8 hours.
Unfortunately some dog breeds especially cocker spaniels are prone to cancer of the anal sac.
A bloody or purulent discharge just beside the anus.
For the record cats have anal sacs too the scooting dog decoded an article published in the whole dog journal speculates that anal sacs once played an important role.
Maybe something he ate.
Anal sacs may become clogged or injured for a variety of reasons which can lead to scooting.
Scooting a bottom across the floor is a common dog behavior often indicative of an anal sac issue.
Watching a dog crawl along the ground while its tummy gets a good rub can send a variety of messages to dog lovers.
Constant rubbing or licking at the anus.
Cancer of the anal gland.
Dogs will often rub their bellies if there is an allergic reaction to a bug bite bee sting or other allergen grass dust etc.
Thanks for your help.
Ideas to try like pepto bismo.
Then there is the submissive dog trying to crawl into your heart and body space.