Nope, furrowed eyebrows and open smile indicate malice and aggression. Happiness is just a smile or smiling with eyes closed. Those eyebrows are a sign of hostility.
Not always, SUN. Sometimes, yukkuris have been shown to have "aggressive" looks when they're just really excited, not necessarily trying to extort/attack somebody.
Just look at pictures of people winning sporting events- they have a smile on but not those angry-looking eyes. Like it or not, this is a look of arrogance.