I believe this has probably happened to everyone. Luck smiled on you and you got a beautiful cub from the tree. Or you bought a super cub from the trading center. Or you won the reverse heat and in order not to block others you had to age the cub.
All of these have one thing in common. No stat boost from training. It is a shame and sometimes this simple thing prevent me from keeping other way a decent cub. For those who looks on all of this the same way like me, please listen to what I wish to propose:

Veteran huntresses!

This will be part of a cub training page.

"As you come to your usual spot to overse training of your cubs, you notice a group of five lionesses. They are too old to have cubs of they own, so they probably come here to warm their hearts and feast their eyes on someone elses cubs. They pay attention to every little detail and sometimes offer prize, sometimes criticism, as they seems to be part of the same, old hunting team, experienced in the hard game of survival.
After you exchanged polite greetings, you got an idea... You have this one adolescent, failing spectacularly almost at everything. Maybe they can help it with some private lesson?
You asked the lionesses, and after a bit of persuading they agreed to help, but it will cost you..."

There will be five lionesses, one is master of stalking, another of climbing, ... etc. Basicly it will work like a cub training, you will chose seven atempts at the discipline you want your adol trained. For every discipline you have chosen, the teacher lioness will ask for something in return. (If you want to train the cub five times in stalking, the lioness will ask for five things.) It may be a carcas with certain ammount of uses or of a specific animal, toy(s) or SB.

Then they will take your adol in for a retraining. What it will mean? All achieved progress will be erased and insted there will be generated progres new. THERE WILL REMAIN POSSIBILITY OF FAILURE! For example if you want your adol to train all of his seven atempts at wrestling, he still may fail some of them.
The flavor text will be something like this:
"Well, thank you for your items, they will be of much help. Please return in two hours, we will tell you, if is this adolescent of yours a good aprentice..."

After two hours you will recive a report about how your retraining went. Every adol could go thru retraining only once, if you try to retrain your adol again, lioneses will "recognize it" and tell you that this one is a "lost cause".

Thank you for reading this. Please, pardon my mistake, I am not a native. I will be very happy for any constructive criticism and thanks to anyone offering their support!

I see "no supports" growing in nuber, and I am curious why. It will help to improve this sugestion.