Cats meow at people, but they often don't meow to each other.
Tortoiseshell cats are almost always female because the genes that determine whether a cat will have black or orange (red) fur are found on the X chromosome. A cat cannot have both colors without having two X chromosomes. Calico cats are just tortoiseshell in which the colors form patches with white.
A male cat is a tom (or gib if neutered). A female cat is a queen.
Despite being domesticated, cats have undergone few major changes from their wild counterparts. They are arguably the least domesticated domestic animal.
Tylenol (acetaminophen), among other things, is toxic to cats.
White cats with blue eyes are commonly deaf (kittens are born with blue eyes, but this can change as they get older).
Cats are not small dogs. Medications and foods appropriate for dogs are not necessarily appropriate for cats. Cats should only eat cat food. Dog food lacks taurine and has a lower protein content than a cat requires.
In Ancient Egypt, cats were regarded as sacred.
Cats are prolific breeders, with a female cat able to produce two to three litters a year. This makes it very important to have your pets spayed and neutered. Animal shelters are overrun with kittens, and many will not find a home.
Go out and adopt a shelter kitten (or even an adult cat).