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.
Harley Quinn first appeared on Batman: The Animated Series in the episode, The Jokers Favor. She was created by Paul Dini and Bruce Timm and inspired by Arleen Sorkin and one of her characters Harlequin. Harleen Quinzel was a former psychiatrist at Arkham Asylum. Her patient was the Joker and he told her all his secrets, manipulating her into falling in love with the Clown Prince of Crime. Harleen Quinzel adopted the name Harley Quinn and broke the Joker out of the Asylum and became his assistant.