So right now, most (if not all) articles about Legendary animals mention that the animal gives 25 XP. And that is not true. I have tried with many Legendary animals the XP Farming method, and all give 30 XP, not 25.
Here's a bit of evidence. I was grinding XP for the bear habitat using the Beaver Bear (since it gives the most XP, and I don't have the Vlambeer). I marked my XP at 492 before continuing the XP farming. Then I used the XP Farming method, and died. Then I saw the XP of the bear habitat. It was at 522 XP. The difference between 492 and 522 is 30, not 25.
Here is even more evidence. To the right is the kangaroo habitat before initiating the XP Farming. (I used the kangaroo since I already maxed out the bear habitat). I started at 53 XP. Then I rode the Skibby Dippy Doo (the Legendary animal of the kangaroo species) and initiated farming. I ended up with 83 XP, as you can see in the pictures. The difference between 53 and 83 is obviously 30, not 25.
I don't know if I should modify all Legendary animals articles, or if someone would help me, or just keep it as is, but we are supposed to give out precise information so everyone would benefit. I am waiting for any staff to read this, as this is quite important.