When playing survival with Fallout 4 mashup textures active chickens, cows, and pigs have default texture. All other textures are correct just those 3 mobs.
MCPE-224239
Fallout 4 Mash-Up: Chickens, cows, and pigs have default textures
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3
I’ve also noticed this issue on the Candy, Chinese Mythology, Master Chief, and Mario texture packs. This is on the Switch.