It's simple. Description for Tigers Eye is "Keep your lion/lioness in their adolescent stage with this item!"
BUT- For all the OTHER Eye of * items, the description is "This decor will cast a prismatic vision of your lion in a Cub/Cub Newborn/Cub Young stage"
Honestly, what even is a prismatic vision? The Tigers Eye is straightforward. The others are not. When I first read "prismatic vision" (when I first joined), I thought it meant a secondary image in the background or something of your lion as a cub, that was transparent (or something like that)
TL;DR:
Make the description for Eye of the Fierce Roar/Youth/Kitten match that of the Tigers Eye.

Additionally, but not as big a deal, make Tigers Eye be called "Eye of the Tiger", so that was the names match up too! It just makes sense for all of these decorations that do very similar things to be synchronized!