Furfrou may not be very big in size, but they do have quite a lot of energy. I've managed to catch one at the beginning of the the game, and trained it up to about level fifty. Once it had reached that level, I've taken it online to see how well it's able to perform when battling competitively. To my surprise, it's managed to taken down two to three of the opponent's Pokémon single-handedly. d: The foe later used Mach Punch though, which eventually stopped its rampage.
Not only is this Pokémon powerful, it is quite speedy as well. It's got a base Speed stat of a hundred, which is definitely above-average. With this kind of Speed, Furfrou can outrun a variety of Pokémon that people like to use, such as Scizor, Swampert, and Ferrothorn. This Pokémon has a single typing, which helps to keep its weaknesses at a minimum.
My favorite kind of Furfrou would have to be the ones in orange and white, because the color scheme seems to go along with their body pretty nicely. Due to the same reason, I'm also a fan of the ones with blue fur. :)