The first hint to crack the puzzle "Protein found in nails, hair, and hoofs" is:

It is a word which contains 7 letters

The second hint to crack the puzzle "Protein found in nails, hair, and hoofs" is:

It starts with letter k

The third hint to crack the puzzle "Protein found in nails, hair, and hoofs" is:

It ends with letter n

Looking for extra hints for the puzzle "Protein found in nails, hair, and hoofs"

Click on any empty tile to reveal a letter

The answer for the puzzle "Protein found in nails, hair, and hoofs" is: