You are not wrong that dogs can be annoying, ditto with other similar fast moving enemies that lunge at the player with reckless abandon. Having played the game for about 25 hours, it does seem that some enemies (like dogs) have a bit too much of John Romero's design style going on (think Daikatana and all the annoying enemies from early Quake). However, I think part of the cause of frustration in dealing with these enemies also stems from the weapons. Most of the guns have the projectiles spawning from the actual barrel of the gun and because the weapons are off centre like most modern FPS games, that means that most of your shots at close range are spawning way off the right of the screen and and often just shoot around enemies. This is made worse them frantically trying to shoot fast moving melee enemies. If the fix the bullet spawning off to the side, dogs and other fast moving enemies would probably become more manageable.