6. Great Dane
Image Source: Warchild
The fact that this breed has become known as “The Heartbreak Breed” gives you a hint about the potential health concerns with this large canines. They are noted for their gentle disposition and friendly personality but they tend to be short-lived, often living for just six or eight years. During their short lives they are prone to experience medical issues that include bone cancer, gastric torsion, heart disease , and hip dysplasia. Most of these dogs grow to reach pretty impressive sizes and it can be a bit more costly to keep them fed compared to smaller dogs. They are also better for owners who have large yards for them to run around in or access to open spaces where they can get out and stretch their legs frequently.
