Just about every type of food has protein. Some have more than others. Whether you eat meat or not, you can get enough protein from your diet.
Apart from protein, you might also want to think about what else you're getting from protein-rich foods.
For instance, to limit saturated fat, you'd want to choose lean cuts of meat over fattier cuts.
If you're trying to get more omega-3s, you might choose salmon or eggs that mention omega-3s on the label.
If you need to get more fiber, you should look to beans, vegetables, nuts, and legumes.
Many of us would do well to tip the balance of our diets away from high-fat meat and toward lean meats and plant-based protein such as beans and nuts. Most nutritionists agree the healthiest approach is to choose from a variety of protein sources.
If you're watching your weight, try including a source of protein with every meal. Doing so can help you feel full longer.
Food and Nutrition Board, Institute of Medicine, National Academies: "Dietary Reference Intakes."
Fulgoni, V. American Journal of Clinical Nutrition, May 2008.
Weigle, D. American Journal of Clinical Nutrition, July 2005.
U.S. Department of Agriculture.