The Secret Doors

Hey Jammers! Yesterday I noticed something while I was on Animal Jam. The secret doors! There are 3 of them, one in Mt. Shiveer, one in the shop that's in Kimbara Outback, and the last is in Coral Canyons, by the Best Dressed game.

There is a crack in this one. There is also a kangaroo engraved above the door... 

Here, there is ice piled up around the entrance, with a seal engraved above it. I wonder what the seal means...

And this one is where Best Dressed is. I can't see what carvings on it. Maybe when I get back on Animal Jam I will be able to tell. Can you guys read what it says?

3 doors, each with different carvings on it... Haha! Maybe there is a secret room! ^.^ Maybe only seals can get into it through the door in Mt. Shiveer, and maybe only kangaroos can get to it through the door in Kimbara Outback. But I don't know about the door by Best Dressed... Do you think there is a secret room? Any ideas on how to enter it, if there is such a room?