A feline litter usually consists of two to five kittens born after a gestation lasting between 64 and 67 days, with an average length of 66 days. Kittens emerge in a sac called the amnion, which is bitten off and eaten by the mother cat.
âHarley Quinn. Dr. Harleen Frances Quinzel, also known as Harley Quinn (a pun on the word harlequin), first appeared in the Batman: The Animated Series episode Joker's Favor, where she served as a humorous female sidekick to the Joker.
Harleen Quinzel was a brilliant and successful criminal psychiatrist. After encountering the criminal mastermind, The Joker, at Arkham Asylum, Harleen develops a fascination with the madman's maniacal psyche. She begins to treat him, only to find herself completely under The Joker's control. Unable to break his hold on her, Harley enters a world of crime as The Joker's criminal accomplice and lover, Harley Quinn. Harley quickly becomes one of the Dark Knight's deadliest enemies, as she carries out The Joker's every evil whim.