All animal foods.
Foods from animal sources provide complete proteins, which contain all essential amino acids needed by the body.
protein
Soy and animal proteins such as meat, dairy products (except butter) and eggs contain complete proteins.
The two macronutrients are carbohydrates and protein.
The type of vegetarianism known as veganism solely permits plant-based diets. All animal products—meat, seafood, dairy, eggs, and occasionally honey and gelatin—are avoided by vegans.
The main sources of protein are animal based foods. For example meat, fish, poultry, milk, cheese and eggs.
Cartilage supplements come from such animal sources as cattle, sheep, sharks, and chickens, with cows and sharks being the predominant sources.
Only in Foods that come from Animalss (its animals)
Some low carb foods that come from animal products include almost all items that are not fried or cooked in a sweet sauce such as barbecue or sweet and sour sauces.
Just like any other living organism (including human), the energy that animal's cells get come from the foods they eat.
Proteins from animal sources are commonly referred to as "animal proteins." These proteins are typically found in foods such as meat, fish, dairy products, and eggs. They are considered complete proteins because they contain all essential amino acids required for human health. Animal proteins generally have high biological value, meaning they are efficiently utilized by the body.