listen, you wouldn't know if you ignored it

Why Cats Meow ?

• 
  To greet people. Your cat can be expected to meow in greeting when you come home, when she meets up with you in the house or yard, and when you speak to her.
• 
  To solicit / obtain  attention. Cats enjoy social contact with people, and some will be quite vocal in their requests for attention. The cat may want to be stroked, played with or simply talked to. Cats who are left alone for long periods of time each day may more likely to meow for attention.
• 
  To ask for food. Most cats like to eat, and they can be quite demanding around mealtimes. Some cats learn to meow whenever anyone enters the kitchen, just in case food might be forthcoming. Others meow to wake you up to serve them breakfast. Cats also learn to beg for human food by meowing.
• 
  To find a mate. Reproductively intact cats are more likely to yowl. Females yowl to advertise their receptivity to males, and males yowl to gain access to females.

Basically, Im so eager to know more about cats ! My advise here, dnt give ur cats food until they finished the earlier food that you gave ! they need to learn how to appreciate too  :D