Talk:Dino Den/@comment-4960207-20120525193812/@comment-5051663-20120525235748

Probabilities have to add to 1. Given the numbers above, which are out of date because they don't include the Brontornis, and keeping in mind that there are 4 common dinos, that would be 1 in 1062. I'm assuming that when you hatch an egg, you can't get Regina, a Dino Habitat, a dead dino, a Street Lamp, or 500 XP. That puts the probability of getting any rare dino at 62/1062, or about 5.8%, or about 1 in 17.1 .Almost every time they change a probability (which includes adding new dino types), the total will change.