haley my dog

Question
i just got haley 4 days ago female lab 4 yrs old spade. she is a leash puller and virtually uncontrollable when she sees another dog or even at cat. she barks and lunges and pulls real bad when she does and drags me. she is perfect in the house and follows commands until we get into this situation. she will not listen to my verbal commands at all in this situation. i live in an area where there are several dogs avoidance is not an option wondering if a head harness or vibrating remote collar could help with this. many dogs in our complex even getting her out for a pee is difficult walking is impossible. if u have any suggestions pls let me know

Answer
Start with the metal slip collar with the rings on each end.  Put it on like this for the usual dog on the left position. Pull the chain through the one ring forming a "P".  Facing the dog, slip it over its head.  The free end comes over the neck allowing the other end to release pressure when the leash is slack.  A five month old's head will still grow some.  If you buy one that easily goes over the head, it still should come off leaving the ears when the dog finishes growing.  You need a good 6' leather leash.  

Easier dogs will give up their pulling with a few good snaps of the leash combined with a stern "Bad dog!".  You can work up to forceful corrections with the leash doubled up in both hands and your whole body behind it.   But you don't want to use any more force than you need.  One gentle technique I like is to just stop when he pulls.  He wants to go.  If you move forward when the leash is slack, and stop when he pulls, he should quickly figure out the only way to get to go, is not to pull.  This is about teaching him not to pull, not getting somewhere.  The man that taught it to me said "If in a half hour you haven't made it out to the front walk, fine, you have taught him a lesson.  Pulling the dog backwards is a good technique too.

Still, you may want to switch to a head collar.  The leading brands are Promise,  Haltie, and Gentle Leader.  They have a strap going around the dogs nose looking something like a muzzle.  They work by pulling the dogs head around.  No other way gives you such great control with so little force.  The prong collar is now a dangerous relic of value only for its macho looks.  Do not consider using one without hands on instruction from somebody with plenty of experience with them.