Bit confused as to why my Grey Wolves picture was taken down?

Apparently it was reported as copyright violation, art theft and misplaced deviation?

Can somebody please tell me what I can do about this or if there's anything I can do? :S

The picture was a realism work taken from a reference picture on a site with free to use images. I always make sure that they are free to use before I use them, either from the site itself, or by asking the photographer if it's a photographer's site.

Unless somebody thought it was a photo that I had just taken from the Internet, I don't understand why it was removed.

I'm really confused