Most experts consider Iceberg lettuce the worst kind because it has a very low nutrient content. Iceberg lettuce contains a small amount of calcium, potassium, and phosphorus, and little else. It’s mostly water, and if your pet eats too much, it could cause diarrhea. However, it’s not toxic, and your pet will be fine if it eats some.
Types of Lettuce
More items...
Vitamins In Iceberg Lettuce