Scientific research has found that cats can make up to 30 different sounds, which we can also experience in our daily lives. In addition to meowing, cats also make sounds such as purring or hissing. This at least shows that cats' sounds are not meaningless; they are a way for cats to try to communicate with humans. Therefore, in order to understand cats, it is time to consider the meaning of their meows. 
1. Meowing
A cat meows primarily to attract attention. A short, high-pitched meow indicates the cat is looking for its owner. A sustained, loud meow suggests the cat wants a door open or food. A cat will meow angrily if it's confined in a carrier or if its tail is stepped on.
II. Gurgling sound
Cats purr when they are happy or content, and the purring sounds vary greatly from cat to cat. We can easily distinguish purring from a harsh growl, which is typically made when defending against an intruding cat or dog.
3. Cackle sound
It's hard to imagine this sound unless you hear it with your own ears, but it's usually heard when a cat is staring intently at a bird or squirrel outside the window. It occasionally makes this continuous ka-ka-ka sound by opening and closing its chin, and the sound seems to carry a hint of anxiety.
4. Mew sound
This pleasant-sounding tone is the most common sound heard in the homes of cat owners, usually indicating that the cat wants you to do something for it.
5. Hissing sound
A short hiss is a typical threatening sound made when a cat is afraid, feels threatened, or is about to attack. Different cats react differently to a hiss. Some may just be startled and run away, while others are about to raise their paws to attack. Usually, there will be some physical actions at the same time, such as flattening their ears, lowering their head and arching their back, and puffing up their fur.
6. Groaning and howling
Angry and anxious cats make this threatening sound. Sometimes, a cat that is close to its companion in the house may make this sound after the companion cat leaves or disappears; the sound made by a female cat in heat can also be classified as this. Needless to say, a cat in heat is meowing, which is quite unsettling. Those considering spaying/neutering should take note: you must wait until after the first heat cycle. Therefore, you must be careful when your cat is meowing; if it sounds like a child crying, and it meows all night long, especially during spring and summer, then it's likely in heat.
7. Keep calling
There's always a reason why a cat keeps meowing. Cat owners can start by checking the food bowl and litter box, and then play with the cat to relieve stress. If these basic needs are met, but the cat still keeps meowing, you should consider whether it's unwell. Observe the cat's appetite, how it uses the litter box, and give it a full physical examination to check for any abnormalities.
Besides physical discomfort, stress can also be a cause of incessant meowing in cats. Think carefully about any recent changes in your home, including alterations to furniture or changes in family members. Once you find the cause, the cat's incessant meowing will naturally improve.
Furthermore, the meaning of cat meows may now be explored more deeply. Experts at Lund University in Sweden have recently launched a five-year research project to decipher cat language and determine if it has dialects, hoping to compile a "cat language dictionary" in the future. They believe that cats seem to consciously change the melody and tone of their meows, possibly to convey certain messages or to make the message feel more urgent to their owners.
One interesting aspect is that the expert team will also study whether cats in Lund in southern Sweden and Stockholm in central Sweden speak different accents or even dialects. They noticed slight differences in the meows of cats in different regions, and the research will reveal the extent to which cats are influenced by their owners' language or dialect. In this respect, cat language may well become a major language in the future, so if you love cats, start learning cat language from your feline friend!
