Bullmastiff
They are strong and stubborn as they love to do it their way or the highway. However, with a little training, they respond extremely well to the stubbornness attribute. Besides for that they are great guard dogs and can be gentle and affectionate.
Short-coated Shelter Mutt
These numerous breeding-mixes are much more resistant to diseases than pedigree dogs. They are often also more well behaved, they look healthy and are extremely loveable and affectionate! With regards to eating and exercise, they rank in at normalcy.