Please Help...Puppy injuring me!

Dragging him across the room? Sounds like a game. So does the picking up part. I would stop doing those things.

Can you describe what you were doing that was working?

If the goal in general is to make the biting behavior stop eliciting a response from you, then doing big behaviors back (ie, getting into a power struggle with dragging and picking up and stuff) seems like a bad idea.

how old is your dog?

What breed is your puppy?

I am not trying to drag him.  I have been told to just walk away.  This results in him latching on.  If I try to run, he is faster than I am and will catch me.  If I ignore him, we will just continue to bite until I cannot take the pain anymore.
 
The only thing that I have done that I have gotten any results from was using a spray bottle.  I got such a huge negitve response from people on this forum that I discontinued using it after 2 sprays.
 
I completly agree with ignoring the biting, but how do I do that when I start bleeding pretty heavily.
 
As for the other posts:
 
He is 10 weeks old and a dacshaund rottwieler mix.

I just took him out for his last walk for the night and he started out being just fine, but then in just a matter of seconds, changed his behaivor.
 
A couple things I have noticed in the past few days, is he is barking alot more at me.  He also like to roll around in the grass (it was after that his behaivor changed tonight).  I just stand there and let him.  I don't know if that gives any clues or not.
 
Also, when I put him to bed tonight, he didn't bark at all.  This is the first time he hasn't barked when I put him to bed.
 
Just giving a few observations on behaivoral changes I have notices in the past couple days.

One last bit of information that I completely forgot about:

My girlfriend was going to come over after work today (about 3-4 hours after I leave for work), and was unable to, so he spend a good 6 hours alone today wheras normally he spends only a few.  He is not crated during the day, just put in the bathroom.

But what I still don't understand is for the first 4 hours I was home, he was behaving the best I have ever seen him.
 
Would something like this cause a backlash like I had tonight?

It seems that first, the pup spent more time alone than normal today, and then there was the kitty incident.  Now I'm picturing in my mind a huge fuss with running and chasing and that was exciting to the pup.  If you try to RUN away from him,he's gonna chase...that's part of the game that he thinks you are playing when you run. The doxie in him is a hunter, doxies were bred to go to  ground to bring up small prey so the cat and the running sort of flip that switch on.  Can you just sit and pull your legs up with you?  I hate to say to wear long pants in this heat, but that's honestly what I have done with pups around.  Sounds like your guy has NO bite inhibition, has no clue how hard he's actually biting  and I'm not going to advise on that.....lots of different ideas on how to teach it so I'll let some of the pros tackle that one.  It may be that you need to limit the length of time you play fetch....he could have been overstimulated and overtired and just gotten cranky....much like a human 2 year old.  I've seen pups play sooo hard that they wear themselves out and basically have a little temper tantrum before they settle down for a nap.
 
Clearly walking away is triggering more biting behavior, so unless you can calmly and slowly walk away and yes, ignore the teeth in your legs, I'd suggest that you SIT on something out of his reach and pull your legs up, turn your back and just ignore the little stinker.  But do keep tons of toys and acceptable chew things handy....I typically wear a fanny pack and bulging pockets when I have pups.....

ORIGINAL: MinnMonkey

I am not trying to drag him.  I have been told to just walk away.  This results in him latching on.  If I try to run, he is faster than I am and will catch me.  If I ignore him, we will just continue to bite until I cannot take the pain anymore.

First, if you were told to walk, why are you *running*????  Nothing excites a pup more than runnning away from him.  It sounds as though you are completely overmatched here.  But, this puppy is 10 weeks old.  What are you going to do when he's six months old, and has adult teeth?
My advice is to get him into a puppy class yesterday!!!!  Forget the advice about waiting till he has his shots.  If you can't get him in because the training facility has rules, then get to a behaviorist, or go to class yourself without him.  But, IMO, if you don't take a class with a good positive trainer, you are really headed for trouble.  More dogs die in shelters because newbie owners gave up on them, or accidentally reinforced poor behavior, than ever die of diseases.  The reason you are headed for trouble is not because your puppy is abnormal, but because you are not informed enough yet to train him properly.  Get the knowledge you need, and don't waste any time doing it.  This is much harder to deal with later, and if you are being pushed around by a ten week old, you have no hope with an adult dog.  BTW, what made you choose this breed mix?  Both are dogs I would not have recommended for a beginner...

he is barking alot more at me. 

This is normal canine behavior.  It either means "play with me" or "I demand that you do something for me".  Either way, you need to ignore demands.  Wait until he's quiet, ask him to "sit", then toss a ball or a toy in his direction, if that's his favorite pastime.
Get a copy of "Little Dogs - Training Your Pint Sized Companion"  This dog may grow larger than a toy, but you might still benefit from the book, and the training principles are positive, and based in science.

A few responses:
 

Can you just sit and pull your legs up with you?

 
I used to be able to do that but he has grown were he can get his head up on a couch.  I could sit on a counter in the kitchen.
 
Would you recommend limiting his play space to a smaller room (i.e. the kitchen) so he doesn't run around and get wild?
 

First, if you were told to walk, why are you *running*????

 
I was told to get away by any means possible..again some more incorrect (?) information.
 

My advice is to get him into a puppy class yesterday!!!!

 
We started on last week, our next class is tonight.
 

BTW, what made you choose this breed mix?  Both are dogs I would not have recommended for a beginner...

 
I wanted a small breed that was good in condos.  The local Humain Society had this mix and I fell in love with him.
 
I have had labs in the past befor I moved to the city, but they seemed much easier than this guy.
 
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The part I am having the most trouble with is that he has been so good.  Yes we have had our problems, but nothing like this.  His behaivor changed in just a matter of minutes and has not changed back.

When he gets over exited and starts biting at you, become very calm, pick him up under his front legs and lift him off the ground, looking him in the face.  He will squirm and fight to be let down.  Just be still, calmly holding him off the ground until he stops and relaxes (yes, calm submission) and put him down.  This is a very humane, gentle way to let him know that he is a helpless puppy and you can control him. 

Voldhard training method has the 30 minute down (hold the over exited puppy in the down position (foot on leash) until he relaxes up to 30 minutes.  They can move, turn over, etc., but they have to stay down. I've seem the method above work better.  The 30 minute down is like a time-out for toddlers.  They squirm for about 2 minutes and then usually settle down and nap for the rest of the time. Vodhard recommends doing this about 3 times a week when you are doing something relaxing like watching TV or working on the computer.  I did this with my very energetic setter when she was little and it would stop the overstimulated crazies. 

You girlfriend might exude more calm and dominance than you do.  You might be overstimulating this puppy and you might not be the leader to him.

What kind of  structure are you creating for this puppy?  Are you allowing him on the furniture or beds?  Do you let him rush out the door in front of you?  Do you make him accomplish a behavior before he eats, gets affection, or plays with you? You got to make it clear to this fella that you are his leader right off the bat.  Dashund & Rottweiler?  How in the he_ _ did that happen!?

Walking away didn't work for me either, so the second I felt a nip, I yelped, turned my back to the puppy and froze in place for 30 seconds.     After a few times she realized that nipping = the end of playing.

When he gets over exited and starts biting at you, become very calm, pick him up under his front legs and lift him off the ground, looking him in the face.  He will squirm and fight to be let down.  Just be still, calmly holding him off the ground until he stops and relaxes (yes, calm submission) and put him down.  This is a very humane, gentle way to let him know that he is a helpless puppy and you can control him. 
 
I absolutely don't recommend this.  If the pup squirms hard enough he could be dropped, and sounds like he's a good sized pup to begin with......plus when he squirms around and BITES again, he's almost certain to get dropped!  I'd rather see the OP bring the squirt bottle back out.
 
Anne is absolutely right that this person needs some serious training so HE can train the pup.

Squirt bottles, yelping or anything or anything that will continue to exite this puppy won't work if this little guy is already causing pain and injury.  If you can't pick up a 10 week old puppy and physically control him, what the heck are you going to do when he is really large? How large is this puppy, anyway?  For large puppies (thought this was a smaller dog (dashund?), it is recommended to hold up the front legs and allow the rear legs to touch the floor.  Believe me, I've seen this work wonders to calm over exited/biting puppies.  It is NOT the alpha role.  You can talk to the puppy calmly while you are doing it. 

! still believe that it has to do more with the total environment and day to day leadership that dealing with this actual behavior anyway.   If you make it clear in a calm structured way, that you are in control of this puppy's day, and you don't tolerate certain behaviors, it makes a world of different.