Spikes on the Tongue - The tongue is like a spoon and is covered with little spikes. These spines have hollow spaces that absorb saliva from your cat's tongue and then disperse it into the cat's fur as he grooms himself.
little secret 
If you are licked by a cat, you may feel itchy or even stinging.
Every time you see a cat licking your body silently, have you ever wondered what is so special about their tongues?-
Materials and construction
A cat's tongue is made of strong keratin fibers, just like human fingernails and hair.
prickles on tongue
The tongue is like a spoon, covered with tiny spikes. These spines have hollow spaces that absorb saliva from your cat's tongue and then disperse it into the cat's fur as he grooms himself.
Made of keratin
These small spines made of keratin on the cat's tongue not only help the cat groom itself, but also allow the big cat to scrape off the residue stuck to the meat when eating the prey.
Self-grooming function
Since the spines on the tongue face backward, anything that enters the cat's mouth is easily carried back into the throat. If the cat cannot spit out the hair ball and the hair cannot be digested, it will lead to the problem of hair ball blockage.
lack of sweetness sensation
Cats have no physiological need to taste sweetness because their diet is mostly meat-based.
health indicators
A healthy cat's tongue and gums will be bright pink. If you find that your cat's tongue turns white, blue, purple, gray, yellow or dark red, or spots suddenly appear, there may be a health problem.
When the stinging hairs stand up
The small spines on the tongue usually lie flat, and only when the cat is ready to groom, will they stand up and start working.
Tongue drinking function
A cat's tongue is like a small spoon that curves backwards, allowing it to quickly introduce water into its mouth. It uses the action of its tongue to pull out the water column, and then the cat drinks around the water column.
Mother cat helps kittens
When kittens are born, they are not yet able to urinate and defecate on their own. The mother cat will lick the kitten's genital area with her tongue to stimulate the kitten to urinate on its own.