As I said, I think our minimum is 6 weeks, but not sure if we allow them to be reserved until they are 8 weeks old. We did have some reserved last year, but the ones she chose sadly died, so think we are doing it differently this year - our kittens are 6 weeks old today, but we are still telling people we dont have any ready, they are small for their age, so we dont know what age they will be going at, it looks like 10 weeks minimumm but it wont be a hard and fast thing, it will depend on the kittens. i thought there was a minimum of 5/6 weeks for peds.