Vegetarianism is the practice of not consuming meat, with or without the use of other animal derivatives, such as dairy products or eggs. Some vegetarians choose to also refrain from wearing clothing involving the death of animals, such as leather, silk and fur. Veganism, sometimes called "strict vegetarianism", excludes all animal products from diet and attire, whether or not this involves the actual death of an animal (dairy, eggs, honey, wool and down feathers).