Broadheads do cutting damage that is more likely to cause a bleeding wound and they disable or kill faster. However, there are some disadvantages: a) may damage the hide more, especially with multiple hits; b) Not as good against armored people, because clothing & armor are usually more protective against cutting (edge) attacks than piercing (point) attack types.
I'll have to invest in some of those broad arrows on my current playthrough as too many times have animals been shot by my arrows but just kept running away and then I've lost them.
2 things.
tracking.
dogs.
It depends on how you play. My dogs usually carry too much stuff to be usable for that, especially when I'm returning home from a trip. My char is much faster than they are.
Lightly packed dogs on the other hand can be too fast for character to track themselves. If the chased animal changed direction off-screen, they may be hard to locate before it's too late (i.e. the dog is dead, or the hide is in tatters). So it can be a good solution, but not necessarily the best under all circumstances.
Uh, not really... I use two dogs for easy hunting, as I can tell them to both attack one animal and literally scroll all the way out to see which way they run. After that, I keep walking until I hear my dogs barking get louder and louder and I follow the noise until I find a breathless animal surrounded by two dogs (who are always fully fed, and rarely attack the animal unless it's small). At that point I can punch the animal to death if I wanted to. My dogs will occasionally get hurt by the reindeer and may be stuck in a constant escape stance, but all I do is tie them to a tree and leave them there for a week so they heal and stop running. Then they're good to go again. In the meantime, my other dog can be put to use, or hell, trade one of the hides for a new dog and slaughter the old one for dog-chow. Evil, I know.