Is it all grass? Or landscaped with mulch beds?

Both our front and back yards have areas of mulch bedding. (I'm not a landscaper so I have no idea if I'm describing it correctly.) We think the mulching in the back yard is a bit much. Like half the back yard would need mulch, if we kept up on it. We want to convert more of it to regular grass for our dogs to run. I'm fine with a little landscaping (like around trees and near the house and pathways).