1. Yes they are, however once you have a few colonists with ranged weapons it becomes almost impossible to not hit most of you 'fighting flock' and possibly kill them.
2. I would say that the chances that stray projectiles hit them and wound them could be altered to include the size of the animal, for example a bullet it less likely to hit a squirrel when it misses, however would be more likely to hit a Muffalo.
3. after i get around 3-5 colonists with ranged weapons i just keep them out of combat all together to avoid losing most of my animals.
2. I would say that the chances that stray projectiles hit them and wound them could be altered to include the size of the animal, for example a bullet it less likely to hit a squirrel when it misses, however would be more likely to hit a Muffalo.
3. after i get around 3-5 colonists with ranged weapons i just keep them out of combat all together to avoid losing most of my animals.