Myoglobin in Raw Feeding: What It Is and Why It Matters If you’ve ever opened a pack of minced meat or offal and noticed a red liquid pooling at the bottom, it’s easy to assume it’s blood. In reality, this liquid is a mixture of water and myoglobin — a naturally occurring protein found in muscle tissue. Understanding what myoglobin is, how it behaves, and why it appears in raw food can help you make more informed choices when preparing your dog’s meals. What Is Myoglobin? My