How do I make the rest of these tails have the exact same Uvs as the selected one?

Any help is appreciated, I am highly confused. If you need more details please let me know. I just want all of the tails to match the selected one.

Easiest way by far is to delete the other tails, then duplicate the one you’ve got a few times

Hi, if they are separate objects you can also copy the UVs of the good one to all the others. It can only work if they have same polycount and topology (scale, deformation and orientation don’t matter).
And the operations are: 1. select all objects with the good one last to have it active. 2 Go to Object/ Link/Transfer Data / Copy UV Maps.

Select all the tails, then ctrl click the one with the correct UV’s in the outliner (so it’s active), press ctrl L, and choose ‘link object data’. That will make them all use the active objects geometry and UV’s, whilst still allowing you to animate them seperately, and use unique modifiers (to add random shape), etc.