We should all know the two adorable cubs Kula
and Chumvi
That become Nala's best friends when Simba 'died'. 
I personally always thought that they were siblings, but apparently they're not!!!

So what do you think?
Do you know for a fact?
I would love to know!!!


But now, when I'm thinking and taking a better look a their pictures, I can see many similarities... But, if you say that they are not brother and sister, then so be it...
By the way, where did you get that information? I mean, about their non-sibling thingie? 
I don't remember where, but it's fanfiction.