Hollywood Freak mentioned his imaginary friend in another thread, which made me think about mine. How many of you had imaginary friends as a kid?

Until the age of about 7, I had a massive entourage of cats and rabbits following me around. Literally, about 25 or something. The main ones I can remember are a rabbit called Horace Wallington, and a cat called Sally.

Is it just oldest siblings/ only chidren that had them?