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 Arkham Asylum, Harley was voiced by Arleen Sorkin, who had previously voiced her in DCAU related media. In Arkham City/Origins/Knight, she was voiced by Tara Strong. In Assault on Arkham, she was voiced by Hynden Walch, who had previously voiced the character in the animated television series, The Batman.