Kevin1990 wrote:wow for real? and BF did sue them or get money for that :O
I think you mean Brickforge didn't sue them? I don't think they can sue each other as long as whatever parts they are making are different. If Lego made cows that were an exact copy of Brickforge then there would be problems. Same thing with the pigs, just because Brickforge has made pigs that are compatible with Lego, doesn't mean that Lego can't make their own version, as long as it is different.
I don't remember where the post is (i think it was in the general Lego forum if you search for it), but there was also a court ruling a few months ago that basically determined that Lego cannot copyright the Lego brick design, which is why Lego can't sue Megabloks for making stuff that is interchangable with Lego. Not sure if that includes specialty pieces like animals, but you may want to check it out for yourself.