There are dogs out there that can reach some pretty impressive sizes. Owning one of these big masses of cuteness has many advantages: Big dogs are great protectors, they make great cuddle buddies, and they are great exercise motivators. On the other hand, having a huge dog also has its drawbacks. Naturally, feeding a big dog is much more expensive than feeding a smaller breed; big dogs are also more prone to various diseases (particularly joint and heart diseases) and their life expectancy is usually shorter than that of small dogs. However, there is one more “problem” associated with large dogs that owners know all too well. Some of them just don’t realize how big they really are! This size oversight make for some hilarious dog and owner situations and this is exactly what you are about to see in this post. All of these 25 gentle giants just don’t seem to realize the consequences of their enormous size. From a gigantic Great Dane who loves to sit on her tiny owner´s lap to a huge Irish wolfhound who thinks he is still a little puppy, these are 25 Ridiculously Oversized Dogs That Forgot How Big They Are.