I may have a problem :-(

Was just changing Chases water for fresh water, bent down to give it to him and he tried to hump me. I stood up and faced him, told him "down" and he gave me the most awful bark and growling I've ever heard!
He didn't seem aggressive, I was able to take his collar and distract him with his water but that kinda unnerved me

Matt is at work, could it be him trying dominance knowing he's not around?

Will that behaviour go away after the snip or is it another thing that needs training out of him?

The humping should disappear completely after the snip, he simply won't have the urge.

I doubt it was dominance but worth keeping an eye on.

Whatever it is, it's not dominance. That's an old theory that has been discarded by most trainers except for the die hard old schools.

It may well be hormonal, it may be that he's still settling, it may be attention seeking. If it is the latter, instead of telling him 'down', ask him nicely for a sit or something that he can get a reward and fuss for. As always the golden rule is that he gets nothing for the behaviour you don't want, lots of nice things for the behaviour you do. Bear in mind that, if it is attention seeking, any attention, even a telling off, can be seen as better than nothing, which is why it doesn't work.

If you need to take him by the collar - either while bending down or standing - do so gently. What you don't want is for him to feel you're confronting him while he's excited as that might lead to him getting upset.

Is he booked in for the snip? I'd say it's probably a good idea sooner rather than later. It should help but you never know, I have a girl who humps although thankfully only other dogs.

Also, do you have anything else booked with the trainer you met? This is the sort of thing that's probably better dealt with by someone who is there and can see what leads up to the behaviour, exactly what he does and how he would perceive your reaction. All are really important.

He just tried to hump me again, I calmly told him "down" and "sit" it worked for two seconds then he was jumping up again.
I think what it is is that he's frustrated cos I'm facing him and he's trying to get behind me to hump.
He tries to mouth my wrists (with an occasional nip) so I let go of his collar. I'm as gentle and calm as I can be to him. It's not his fault he behaves this way!

We're just waiting to hear if Matt can change his hours so we can get Chase into training classes asap and will definitely book a home visit with the trainer when she's not feeling poorly.

Going to book Chase in for the snip next month!
Fingers crossed all his frustrations will slowly disappear and "nice Chase" will take over.
His humping frustrations are his main issue, poor doggy!

If you can, leave the room. Quietly, not a word or a look, just walk out. In effect, he's driving you away.

And I'd get that snip booked in as soon as you can.

I'll phone around some vets tomorrow and see if I can get him in anywhere that will let us pay in instalments.
My car needs new brakes and is due it's MOT so money is tight this month.

I feel bad, I'm doing the best I can for him as soon as I can!

I'm currently going through my first humping stage with Hank and sit with the index finger is working even if I have to do it a few times he's get a treat after he's totally stopped.. also even though he does sit on command and whenever there's food about I've been adding random new "sits" with a treat and brought our clicker back out.

Down to about 2 attempt at humping me now before he takes the hint.. my legs are a mess though

Chase is a "grab you by the waist" humper.
I'm a shorty so it's easy for him to do that to me, maybe that's why I get it the most.

I'll keep persevering with "sit" but he gets so fixated the only thing that stops him is to send him out the room and have no contact with him.

He did lovely earlier trying to get on my lap for a cuddle and even brought me his bone which he let me take with a "leave it". He sat and waited, gave me paw then i gave it back. He's not daft bless him.

I'm a shorty too so won't be long before he's at my waist!

I often leave the room when hank won't settle while I'm on the sofa with him because I find if I try to get him out of the room he things I'm still playing with him so I just get up and don't say anything and leave him in the living room with thedoor closed for 10 seconds, then I come back in and try again, if trying to get his attention with a toy doesn't work I just keep doing this then he stops.

Aww he sounds like a real sweetie, those are the moments that make you think when it's being tough it's all worth it.

Rather than sending Chase out of the room, which means you've interacted with him and given him some attention, you leave, which you can do without looking at him even. It's also much more immediate, the first move by him to hump and you're gone.

The other thing is to try and get a sixth sense of when he's about to do it, the equivalent of the twinkle in his eye. If you can give him something else to do to get your attention at that point you might find it easier to break the cycle. Anticipation can be your greatest friend.

When Chase is in the hallway it's easy to leave and shut the gate behind me but if he's in the front room with us I think I'll try the distraction with a toy idea.
Still trying to get him used to being around the children but I don't think that's possible until he's had the snip and his frustration is gone or at least lessened.

If you're worried about leaving the front room thinking he will trash the place.. I know all dogs are different but I believe he will be the same as hank where when I go and come back in he's sat in the exact same place because he's been wondering where I'd gone

the only thing i'd like to add is that castration may solve the humping, but it may not. If it's a learned behaviour you're still going to have to train him not to do it.

what it will help with is the frustration/excitement, which should begin to lessen within a couple of weeks after the surgery.

It doesn't seem like a learned behaviour, there's no specific thing I can see that triggers the humping either.

Bit off topic bit we did just tried him in the front room with our one year old crawling around.
He run straight at him and licked him in the face but bowled him over at the same time so we had to lift him off the floor :-(

That whole time though I was crawling around with our one year old and Chase had no intentions of humping at all ... He had plenty of opportunities!

I think most pups do this more because of a way of expressing excitement rather than actual frustration. Castration doesn't always stop it, but it happens much less often as they get older.
I know how painful it is when you get grabbed by those ultra strong legs from behind and you can't get free, not to mention the embarrassment in front of other people!
Don't worry, it's another phase that passes.