Wow, I had the exact same concept. These are ridiculously close to how I envisioned them looking. The only differences are the guards don't have the likenesses of the 'mons, and Raikou's blade is shaped like a lightning bolt. Instant fav.
Not gonna lie; I still think that this trio are cats, not dogs.
Absolutely love Entei's molten, powerful look! Such stark contrast to the flaming emblem gives me shivers at how majestic it is!
Raikou's sword looks sleek, which is confusing since lightning in general is more structured and stiff, but it definitely looks very appropriate to dishing out fast attacks.
I....do have issues with Suicune's sword, though. Although the blade and handle look very nice and gives the nice impression of being made of crystal, the cloud and ribbon don't look too good on it. Honestly, those parts look to give a disadvantage to the wielder by getting in the way, so to speak. While I'm inclined to believe that the cloud isn't actually set into the weapon and is instead just an effect of the blade exuding it's own mist, the ribbon looks to be just something stuck onto the hilt.