Hi,
We've had several dogs from puppyhood before, so not inexperienced owners, but are having a massive issue with a new puppy. Male Springer, about 10 weeks old when it came to us, after being rejected by mother - and it has a massive biting problem. Way beyond normal puppy biting - my DD is terrified of it, and I honestly wouldn't let it be around any children right now. He bites everything in sight (can live with that) but that includes people, and very, very hard.
I am covered in bites - the only time he's not biting us is when he's sleeping. I've tried the "praise/treats when not biting" method, but because there are almost no times when he's not biting, that's not really working. He has a gazillion toys, and will happily run around the garden playing with them, and the suddenly launch at you and bite - he even managed to bite DH in the testicles the other day.
I think we need the help of a proper behaviourist. DH thinks there must be something we're doing wrong. The only thing that seems to work is having a long toy (e.g. ball on rope) and shoving that in his mouth when he launches at you - but I'm not sure that's going to work long-term, it's just distraction rather than learning.
Any ideas?