If the animal was a gift that you don't want anymore, then please find it a home where it can be happy or put it in a no-kill shelter. The shelters are full of pets looking for a forever home. Some people prefer to adopt an older animal rather than getting a young one. An older cat is not as mischievous as a kitten can be nor are they as active.
Of course, who could turn this down?
No matter which method that new cat arrived, they will return your love many times over.
Through all of this, however, you have to remember one basic fact. No one owns a cat!
Marion Lovato is the author of Sam, the Superkitty. Her book describes an ordinary cat changing into a superhero to protect his family from things that go bump in the night. Available on Amazon as a paperback or Kindle edition. http://www.amazon.com/gp/product/1604588667