Not sure if you still need help but I see you have three small issues to fix.
First, change the ariaLabel attribute name to => aria-label
Secondly, just like megarockstar95901 mentioned your trying to access the wrong object’s length. selectedAnimal object doesn’t exist you need the access the animals object on line one, which you already have in the second line of your displayFact function, so all you need to do is swap the selectedAnimal variable with the animalInfo variable inside of the math.Floor() method.
Lastly, your displayFact function has an = sign right after the closing parentheses causing the app to crash and not render anything to the window.
These challenges without a console tend to be quite frustrating because you can’t see these little errors causing your app to crash. Hopfully this helped you out in anyway.