I have tried this with hatches and dreckos, but it will most likely work for every critter.
If you wrangle any critter and then release it to stable again, it's stats will get reset.
For dreckos even their scales will regrow. (Unlimited plastic/fiber)
Steps to Reproduce
Drecko case: 1. Wrangle wild drecko 2. Release it to your stable at critter drop-off 3. Tame and shear the drecko. (Taming part is optional) 4. Wrangle and release it again. 5. After releasing it's wilderness will be at 100%, scales will regrow and other stats after taming (age, reproduction) will reset to 0 too.
This issue has not been confirmed by a developer yet.