Okay so a while ago I had two cubs born at the same time from the same lioness, one male and one female. I really liked how the female came out, so when she grew up I bred her with other studs. Finally, she came onto her last heat, but I realized I could get one more litter from her if I used an Instant Birth Feather. Some time after using the ibf, I was feeding and playing with the siblings when I realized that somehow the lioness was three months older than the male?? No clue how this happened but I suspect it has something to do with the ibf