I have never seen something like this: 130 cats, almost all ginger and ginger-and-white, all siblings from one mother who was rescued when pregnant by a woman living in Moscow, Russia. And they were living in a one bedroomed apartment.
All the cats are siblings. It took four years to get to this state. She never sterilised anyone of them. They interbred, sibling-to-sibling and I suppose male sibling-to-mother.
Astonishingly, none of the cats had an infection. All were clean and affectionate. An odour from the flat alerted neighbours and the woman eventually agreed to accept help. Volunteers from a charity, Zoo Defenders, including Irina Medvedeva and Anastasia Soloviyeva took away 50 and 80 remain for the time being.
SOME MORE FROM RUSSIA: