Can you eat a cactus whole without damaging yourself?

Eating a cactus whole is not advisable, as many cacti have spines or glochids that can cause injury to your mouth and digestive tract. Some species, like the prickly pear, have edible pads and fruit, but should be prepared properly to remove spines. If you're considering eating a cactus, it's important to identify the species and ensure it's safe for consumption. Always consult reliable sources or experts before trying unfamiliar foods.