Awhile ago I checked one of my lionesses mother, and the mother was younger then my lioness. If you want to check my lion its deceased and called SilverHeart I think. Just today, I checked BerryHearts mother and the mother was also younger then BerryHeart. I just wanted to ask, how can that happen? And can I do it?

(PS: I bought BerryHeart and SilverHeart, also I think theres many more of my lions who are older then their mothers..)