Wren

Not the only land animal, but it’s true they can’t jump: 100% super reliable source.

Mainly linking that site because this line kills me:

The tortoise cannot jump because it lacks agility and speed.

Annnnd bookmarked. Thanks, this is really cool!

Because forum posts are always full of accurate and helpful information?

Not necessarily, but at least there’s much more opportunity for other people to jump in and correct false info or expand upon something. It’s by no means a flawless system, but it’s better than only have one source of information