The Bigglesworths are a group of Siamese cats that share the same owner, who named every one of them "Mr. Bigglesworth," including the females. There are at least eleven of them and they look very much alike, so it's hard to tell them apart and even they struggle to do so. The only exception is that one of them wears glasses. It's practically impossible to tell the difference between the males and females, and because of the masculine name, they're often assumed to be male.