I've been thinking.... do you really think it's rude to look another monkey in the eyes?
Of course it is! It's the same as saying "You are weak and I will dominate you".
But maybe that's just a cultural thing. Maybe we just need to agree that it doesn't mean that and remove it's stigma.
Hey! Of course it's cultural but it's our culture! If I catch you looking at me I will throw two fistfuls of crap at you! Friend or not eye contact is rude!