Flip-Flop of God: According to LEGO designer Mark Stafford, the dinos in Dino Attack were robots and animatronics that went out of control and escaped from a theme park, which was essentially WestworldMeetsJurassic Park. This explanation was loosely hinted upon on the LEGO Dino Attack website, which described the T-Rex◊ as "the ultimate machine creature" and went out of its way to explicitly say that it was not "the real thing". However, aside from that one instance, none of the toyline's marketing referred to the dinosaurs as robots. Instead, LEGO Shop@Home catalogs and even the back of the sets' boxes◊ described the dinosaurs as mutants, which became the long-accepted explanation among fans who dismissed the website's T-Rex description as merely metaphorical.
No Export for You: If you lived in Europe and wanted Dino Attack sets, or if you lived in America and wanted Dino 2010 sets, then you were out of luck because The LEGO Group had zero intention of selling either version of the line outside its intended continent. However, this is a step-up from LEGO's original intention, which was to not release this line in any form in the European market.
As mentioned under No Export for You, Dino Attack was created solely for the North American market and was not intended to be released in any way in the European market, which would have received the LEGO Vikings line instead. Fortunately, after an outcry from both sides of the Atlantic, Dino Attack was released in Europe (albeit as Dino 2010) and North America also received the Vikings theme.
Word of Dante: When the Flip-Flop of God favors the "mutants" explanation over the "robots" explanation, the mutants being created and genetically modified in a laboratory seems to be a case of this, since this is the commonly-accepted theory among fans even though no official explanation was given for the mutants' origins.