Thanks for that, it's just sometimes when people continually tell you that you don't have an aggression problem with your dog and that their behaviour is normal puppy behaviour it can be very frustrating. I've known a few puppies in my time and have never seen behaviour like this. I am coping okay with it, I understand that it will pass, but I also understand that if I don't put in the work with the training, it won't get any better. Quite a few people have told me to give him a good smack, I have resisted this but like you, once, when I was at the kitchen sink , he came running up behind me out of the blue and sunk his teeth very deep into my calf. I didn't have time to think and swiped him off me, it was bloody sore and an automatic reaction to the shock. I regretted it, but it did take him a couple of days to resume the behaviour, it makes you wonder. Anyway, I don't want a puppy who cowers when I go near him. I was only asking about the castration think, if worst case scenario, he gets older and no amount of training will cure him, I want to be prepared for what i will have to do then because getting rid of him is not an option. I live in fear that he will maim a child as, at the moment, he cannot be trusted around anyone without a lead on. I've been to the training classes and Dylan was the only one snarling,biting and jumping up at the lead! Can't blame for being at tad worried.

I don't like puppies

I didn't enjoy Molo's puppy stage really, and unless my circumstances drastically change, I will not have another pup again (famous last words

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What I did to survive it was to ensure that I gave him every possible chance of success to be good - and remove as many possibilities to fail as I possibly could.

For instance, you say that Dylan sank his teeth into your calf when you had your back to him while standing at the sink. He didn't bite you because he was p**sed off with you; he bit you because he wanted to play and interact with you (you are the best thing in his life, after all), and the only way he knows how to engage in play is to bite

Even adult dogs do this when they are playing with each other - one will run in and grab and ear, or leg, and then dive away again as a way of encouraging the other dog to join in. My suggestion (from the School of Puppy Survival) is for you to do the dishes after he has had a play and pee; shut him in his crate for half an hour or so - then he won't be faced with the temptation to engage you in play
I know you have reservations about the crate, so maybe you could consider a puppy-play-pen instead - but if it prevents him from learning bad behaviour, and protects your ankles when you cannot have your eyes on him, then it is good for both of you

If you give a puppy opportunities to fail, it will become more difficult for you to teach him to succeed - each time he does something that you consider unacceptable, he is rewarded by the success of his action, so the behaviour is reinforced. This cycle can easily be avoided by removing as many opportunities for him to fail as possible - and rewarding him for the behaviour you do want to see

You said "he can't be trusted" without a lead on - but a houseline is not a negative thing; it is a standard piece of training equipment in many homes, and not something to be avoided. Don't make it more difficult for you and him by considering the use of training aids as a failure, or only to be used as a last resort

Without training aids such as a clicker, long line, houseline etc, I'd be in a loony asylum

A dog is born to be a dog - and has to be taught how to behave in a pet home, and taught what behaviour is acceptable and what is not........to expect a 4 month old puppy to know the rules, and to label him aggressive because he doesn't, is a huge amount of pressure to put on yourself, and the puppy
