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.
In the early aughts, Harley was everywhere. In 2001, she got her own monthly comics series, the eponymous Harley Quinn. The next year she became a recurring character on TV's Birds of Prey, a loose adaptation of a comics series of the same name.