Does your pet eat veggies ?

I have one dog and two cats. The cats don't eat vegetables because I have never offered it to them and I have no plans to because I am concerned about feeding them anything other than cat food because I don't know how they would digest it. The dog eats lots of veggies, she seems to really like them and I don't mind giving them to her because the calories are really nominal. Her favorites are green peppers and the harder pieces of iceberg lettuce (I actually usually throw them out) that are near the core.