The four legs and right/left ears of a wolf cannot both be independently retextured

The two ears, and the four legs of a wolf both cannot be independently retextured from one another, making them always look the same, limiting the player's resource pack creativity.

Steps to Reproduce:

1. Download and apply the following resource pack:
   Wolf.zip
2. Spawn a pale wolf (affects ALL variants, pale is used as an example):

   /summon wolf ~ ~ ~ {variant:"pale"}
   

Observed Behavior:

Both of the wolf's ears and all four of it's legs will look entirely red, despite the player seemingly only modifying one ear, and one leg in the UV map.

Expected Result:

Only one of the wolf's ears and one leg would be altered, since that is what the player intended to change. The current behavior is unexpected and not resource pack friendly.

Screenshots/Videos: