10wk old showing aggression
 

Leo has recently started to show signs of aggression. He's been a nipper/biter since I got him but it's gotten worse over these 2 weeks. I've been doing everything I can think of; a firm NO. I'd put him on time out, I would redirect him with a toy, but nothing seems to work. The toy thing worked for a while but now it really doesn't. He's an extremely hyper puppy, and he's now beginning to harass my poor JRT, whom will just sit there and do nothing. I always have to pick Leo up in order for him to leave my JRT alone, and Leo will growl and bite my hands and squirm like crazy. He also has a habit of picking up random things outside; sticks, rocks, acorns, leaves, ect. I swear I'm taking something out of his mouth every 10 seconds. Tonight I had him out and I noticed him lay down and start chewing on something. I bent down to grab it out of his mouth, as I always do and he snarled at me. He lifted his lips and literally snarled. It was a very scary experience, especially from a puppy so young! I've raised 3 dogs from puppies. My Golden retriever never did anything like that, Zoey my female Yorkie was the sweetest/most laid back puppy. Leo is a total terror. He recently started biting at mine and my family members faces. He'll be totally sweet one minute then it's almost like he turns into a totally different dog. Whenever he bites my hands/fingers, it's not just a playful bite/chewing type thing, he literally clamps down really hard and leaves teeth marks. I have to pry his mouth off. I'm definitely going to start him in puppy classes once he has had all his shots, but until then is there anything I can do differently? I really don't want him to grow up to be aggressive, I want to nip this attitude in the butt before it gets worse!

I hope you can get some advice from more experienced members!

Eating everything outside is normal. Yes you do need to take him to obedience class if no more than petsmart, it's basic and helps train YOU train him.asap , he's old enough now.
You will learn to teach him the "drop it" and then reward for doing so . You need to earn his trust and grabbing things out of his mouth isnt the way to do it.
Interrupt bad behavior as it happens but remember they are just babies, you have to be patient.

As far as nipping , do to him as his mama did when he misbehaved, pinch(bite) the back of his neck and in a stern voice say "ack"! As mama would yip.
That comes in handy a lot and he can relate to that , that is not acceptable behavior.then IGNORE him for a bit . That Is what mama and pups do to each other when they get into trouble.

This is a very important learning period in their lives , learn the basics so they know what to do......
Good luck

I have to wait until he gets his last set of shots before I can start basic obedience classes. I've done the pinch thing like his mother or litter mates would do, but that seems to make things worse, and he bites harder, or doesn't stop. I've begun to do basic training like sit, and come for about 5 minutes every day. I also play with him on the floor, so I'm at the same level as him. I make him sit everytime before I throw his toy. =/

Yogi was a feisty little biter when he was a baby also, I would yell ouch and quickly move away from him. He learned and this seemed to stop it. 10 weeks is still so young so I would not worry too. much at this point, just let him know you do not like this behavior. They really want to please they just get the puppy crazies!, good luck!

Things are getting worse. I had him outside and he randomly came over and started biting at my pant leg, something he's never done before. I grabbed my pant leg a few inches above where he grabbed it, and told him to drop it. He dropped it, but proceeded to clamp onto my hand really hard, growl and cause my hand to bleed. UGH! This dog is getting utterly ridiculous.

Unfortunately, this really is normal behavior. I think someone else mentioned that if he had stayed with his Mom and littermates that they would be teaching him that he's being too rough but now that's going to be up to you. (sorry)

We got Mia when she was 10 wks old (or so they said) and she acted exactly like your pup. We got Max when he was 12-13 wks old and I don't remember him doing any of this. What a difference 2 weeks can make. :)

I think the only thing you can do is what you are doing. Use the same command so he doesn't get confused - have something ready for him to chew on - walk/play with him so he gets tired - be patient - and try to enjoy him as much as possible.

Yea I got him when he was around 9 weeks. He was raised with his mom, dad and litter mates. I got zoey when she was 8wks old and she never displayed this type of behavior. What did you do with Mia to train her not to behave that way?

How old was this baby when he was separated from his momma.....sounds like he has not gone through the "bite inhabition training" that moms teach their babies between weeks 8 - 12.

This happens a lot when puppies don't stay with there moms until 12 weeks. Have you trid squirting him with a water bottle and saying no when he nips?

He was 9 weeks old. I'm hoping my other dogs can teach him a thing or 2. Or is there any way I could teach him bite inhabition? sure it won't be the same, but I could try to imitate what his mother would do.

I say a loud firm NO..I say "AH!" I move away from him, put him on puppy time out for a few minutes. Said "AH" while slightly poking/or pinching the back of his neck. My last resort was the water bottle, and I've used it twice on him, but I feel bad when I use it..so I try not to.

I chose him because he was the puppy who came up to me, and wanted to be with me. His brother wanted nothing to do with me, and just wandered off and did his own thing. I felt a better connection with Leo, but now he's exposing this behavior, and it totally caught me off guard. I really hope puppy classes will help. =/

Make a No noise (whatever that noise is going to be) ah! and redirect - give him something he can chew and bite. When stops biting (make him sit or another command) say Good! and give him a treat. He will learn that there are other things that are more rewarding.

We've had a dog do this, we squealed when he bit, as if he'd broken skin and we were really hurt, we then stopped playing and turned out backs on him. It took a little time, but this worked. Also giving lots of chew toys. We offered our finger, if he bit too hard, back to squealing and not playing. He soon learnt to bit gently.
Hope you fine what works for you.