Just FYI,
Protein is probably the least important of the macronutrients that you would want to bulk up (including humans). Protein is used to repair muscle tissue that was "damaged" during a strenuous activity (such as working out or running away from/fighting with a predator). It's 100% necessary, but not the only thing necessary for bulk.
Carbohydrates are used as energy and whatever's left over is stored as body fat. Sugars are carbohydrates that burn fast...meaning either use the calories within 15 minutes or store them as fat.
Dietary fat has more calories per gram and burns much faster than even sugars, which is why it tends to make people fat. There are beneficial types of dietary fats, though...and the CGD has those too.
Another FYI,
Sometimes putting a 25 gram female with a male is all you need to get her to 40 grams...it's amazing how fast a female will put on size after she's introduced to a male. Hormones, hormones and more hormones.
