According to sites like Mysterious World to Pet Comments, the Arnold Schwarzenegger of the dog world is none other than the not-so-humble mastiff. The exact variety differs depending on who you ask — some go for the short-haired English mastiff, while others swear by its puffier Tibetan cousin. Until someone arranges an adorable, yet mildly terrifying event where teams of English and Tibetan mastiffs duke it out in a massive game of tug of war, we'll just say that mastiffs, in general, rule the roost when it comes to pure pupper power. 

It's no wonder, either. In a doggy version of Game of Thrones, the mastiff would be the Mountain. American Kennel Club straight up describes the breed as "colossal," and notes that a male mastiff can weigh around 230 pounds and its height can exceed 30 inches. Smithsonian tells us that the mastiff actually evolved into more or less their current form thousands of years ago, and decided that they were as good as it gets around the time civilization became a thing. Ever since then, they have been nobly hanging around, watching over us and letting our children climb all over them, never once losing their cool... unless someone threatened their loved ones, in which case, that someone should probably start running real fast. 

If all of this sounds too magnificent and majestic, though, it's good to remember that these powerful giants are massively fond of drooling and their noble form is often undermined by a puddle of slobber under their mouths. 

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