Cats Meowing Loudly Fighting. When your old cat meows all the time, especially loud yowling at night, there could be a serious health problem. It is their way to say they need or want something from us.
Numerous diseases can cause cats to feel unusually hungry, thirsty, restless or irritable—any of which is likely to prompt meowing. Elderly cats who begin to yowl loudly may be suffering from something serious but treatable. (yowling is a different story.) when your cat meows, it's because domestication has made her a perpetual kitten at heart.
The cat is making its concerns known and seeking reassurance.
Older cats often meow more because of failing senses or due to anxiety over not being as nimble as before. Male cats do not enter heat cycles. Anxious cats are always more verbal. They use some squeaks, meows, hisses, and purrs to communicate with each other.