Yeah the typical FeralHeart wolf/canine is usually jet black, really dark grey or white, or a two of them at once. I'm not sure why this is. I think maybe people generally see black or white wolves as 'cool' and so they make characters like that. It seems to be a bit of a trend, since a lot of people make these charries and have perhaps caught on the this 'black wolf, white wolf' trend.
Particularly in Bonfire, I rarely see a canine that is any other neutral colour (about from the German shepherds), which I think is a real shame. I like brownish coloured wolves and it would be nice to see some people breaking the trend.