* Pork: Sometimes used in burgers, especially in certain regions.
* Chicken: Ground chicken is a popular alternative, often labeled as "chicken burgers".
* Turkey: Ground turkey is another lean option for burgers.
* Lamb: Ground lamb can be used for a more flavorful burger.
* Vegetarian options: There are many vegetarian and vegan burger options made from ingredients like beans, lentils, vegetables, and plant-based protein sources.
It's important to check the label of the burger meat you buy to see what type of animal it's made from.