Which of the animal milk contains the highest % of protein?

Sheep milk contains the highest % of protein compared to other animals.
Aardvark milk contains the highest protein when compared to all other animals in the world.
Sheep milk contains 5.5% protein. 

🔴Additional Information:
Animals % of the protein in their milk
Cow 3.58
Buffalo 3.80
Goat 3.1
Sheep 5.5
Camel 3.7