I agree with you 100% that copying characters is a low and selfish act, taking advantage of all the time spent by someone else creating the general ideas and having it replica'd for easy use. Many people lack this type of common sense, that a character taking up their personal interest is just up for grabs like that. That is not the case, for a character is its own entity... and if someone takes away what makes it unique and different from anything else just ruins the entire point.
Now, regarding what you've said:
"Not an exact one, his pelt was off colour and everything but it has really bugged me."
You come to saying that the only thing that was similar was the name and/or model? If the colours are different than what you have provided your own, then that wouldn't be considered "copying" your character... considering there is such a limited amount of markings as well. Though, I'm not entirely doubting you the slightest, no worries.
As far as naming goes, many characters share the same name as others. My personal OC is named Talon, and throughout my times playing Feralheart, I've seen plenty of other users who have named their own characters Talon. Though each were of different colours or markings. Sure it somewhat bugged me that many chose the name Talon, but 'ey, a name cannot be copyrighted nonetheless.
Aside from that, it's nice of you to get the message out there. It is, indeed, wrong to copy one's character. Things like these can help knock a bit of common sense into those who strongly lack such. c: