AlphaAleu
This question popped into my mind after re-watching Baltos 2 and 3, are they related? In Wolf Quest, Muk says "I wish we had a mom, too." Notice he says we- referring to both of them- and instead of saying mom as a plural, he uses it in singular form, suggesting they shared the same mother. I hope I don't sound stupid but what do you think?
Moss
Yes, they are indeed brothers
But since you want so much to know, yes they are brothers, at least we think so and the film makes note that they are brothers, at least in the view of some people.