@coded_artist @benis_redux Blink can regenerate any part of her body, not just her tail! As long as she has enough mana, she can fully restore a missing part no problem! Her tail can pop off like a lizard's though, since she's part reptile, that is tail-specific.
Her tail will get thicker and stronger if she has a protein-rich diet and exercises it a lot, and will get fatter along with the rest of her if she gains weight (though her metabolism makes that difficult to do).
As for the tail-growing contests... no, not really. Goblins with tails are uncommon, and any hypothetical tail pageants they had would be graded on whippy tuft-ended goblin tails rather than chimera-goblin-dragon tails.