indeed and all those links say something slightly different, none of them are backed up with any kind of scientific information, some of them are totally over the top in what they list as dangerous ("keep your dogs well away from clematis") There are many things that dogs will eat that will give them a stomach upset if they eat it. Now I am not saying that dogs should eat these things, or we shouldn't be very vigilant with a puppy, but that does not mean that these things are poisonous!