I just went through the test of house and patronus. I am a gryffindor! My patronis is a borzoi!
The borzoi details are surprisingly accurate although I don't share the same silhouette (in that case I'd have the bear patronus lol).
That those who take the form of dogs tend to be friendly and loyal is no secret. The borzoi dog usually marks someone who is also easy-going, often quiet, and possessed of a good sense of humor. They have active, intelligent minds and are experts at amusing themselves, being content alone or with others. Rare is the borzoi that can manage to keep themselves bored for long. The tendency to find humor in almost anything is also common in borzois, from the mundane to the macabre. Though, naturally, the range depends on the individual. The humor comes with a helping of class and, when applied properly, they are quite eloquent people that can navigate difficulties in life with easy grace.
The Borzoi, or Russian wolfhound, is a sighthound bred for hunting everything from small rabbits to big wolves. Despite their lithe builds, they are quite strong and are extremely fast. Nothing pleases Borzoi more than running and chasing. As companions, they are gentle, considerate, and seem to find everything entertaining. They bond well with their loved ones but are known to be nervous when strangers invade their spaces, making them good watchdogs. Like most sighthounds, they have a lanky build and are graceful in almost everything they do. Setting them apart is their long, wavy coat suited for both insulating against the more chilly climes and just generally looking majestic. Borzoi have found admirers amongst everyone from hunters to Russian nobility, with whom they were extremely popular once upon a time.