Isn’t it amazing the effect a single genetic mutation can have on the phenotype of an animal? The “bully whippet” in front of the normal sized whippet on top and the Belgian Blue “supercow” on the bottom lack myostatin, a gene that inhibits muscle growth. The result is Muscular Hypertrophy or double muscling where the muscle cells multiply. So far geneticists have found naturally occurring myostatin “nulls” in whippets, some breeds of cattle, and humans. The result in every case is freakishly shaped muscle mass. Absolutely fascinating!   

CAUTION: Every animal is a unique being in a unique situation and what you see on these webpages is generic and general and may not specifically apply to your animal's situation. Any responses to questions through this website similarly cannot be as precise and informed as is possible in a face-to-face assessment. Accordingly, you should not rely on anything set forth herein as the last word, and you hold Helping Pets Behave harmless from any liability whatsoever based on your reliance on the information you receive through this website.

genetics genetic mutation mutation bully whippet belgian blue supercow whippet

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