Protein comes from both animal and plant foods.
The good news is that most children meet or exceed their protein requirements on a daily basis without too much thought. However, some children are picky about protein, and knowing the variety of sources available can be helpful to parents (and their kids). Animal sources of protein include beef, poultry, fish, eggs, milk, cheese, and yogurt. Plant sources include beans, nuts and nut butters, tofu, soymilk, seeds, and some vegetables. Serving a variety of protein sources allows your child to get a balance of protein foods, as well as the amino acids contained in them.