Do you like the mod Alex's Mobs by created by alex1the1666? Well, I love it! Literally my favorite mod, in fact. That being said, there were some textures I felt could be improved.

The majority of texture changes just revolves around removing the whites from the eyes of animals that do not show them in real life such as the moose, raccoon, and gazelle.
The cachalot whale and orca have had their textures "downscaled" to look more cohesive with the textures of other mobs in the game.
The endergrade has had its colors swapped to better match the biomes found in the must have mod BetterEnd.
The crocodile has had a new texture made by me, but should more or less look the same.
The Straddler looked too cool. I made its face look dumber.
The mungus, dropbear, and warped mosco I attempted to take artistically in a different direction. I hope you like the direction I took.

Of course if you like one texture and not the rest, simply extract the resource pack, go inside the folder and delete the textures you do not like to default back to the official textures.