What to do about mounting behaviour?

[Batteryhuman]

My 7 month old springer goes to doggy daycare on the days I work. It is run by a couple from their house and the (up to 6) dogs have the run of the house and paddock. He loves this and they love him. However he has become quite obsessive about mounting the 2 young females who are there with him. He is apparently fine with the young male and the adult bitches.

They tell him "no" but are having to keep them separated and that is not how they like to do things as they are not a kennel with separate pens (which is what I like about it).

Can anyone offer any tips to stop this? I do intend to have him neutered eventually but would prefer to wait until he is nearer a year. Is the chop the only solution?

Are the girls spayed?

I want to ask that too, it may be bitches are coming into/are in season?

I don't know. They are only young too but I have a feeling one of the 2 has been spayed quite recently.

Unless they're intact and coming into season, it's more likely to be general overexcitement/arousal than anything sexually driven. I'd assume that if they plan to have all the dogs together they'll get both bitches spayed. He needs to be redirected onto something else so that the mounting doesn't become his "way" of playing/dealing with excitement.

Getting him neutered will not guarantee to stop him mounting the dogs. I think he will need to be trained to stop by using distraction.
(I've got an 8 month old springer)

My sisters puppy does this to my pup. Her vet told her it is not sexual it is a display of dominance.

My neutered adult male has also tried to mount my pup and my sisters on occassion, so I'm inclined to agree with the vet. Devil Dog is dominant natured dog.

I distract with a firm no, which seems to stop my dog, my sisters puppy has to be dragged off her.

Vets often tend to spout nonsense about dominance

My two bitches (mother and daughter) mount each other when they're playing particularly energetically. I wonder what a vet would make of that? Presumably that they are taking it in turns to be dominant

Thanks for all the advice - parallel research on the internet would appear to indicate this is due to excitement. (ignoring , as always, all websites that quote dominance theory) I want to resist the pressure to have him neutered too early.

I will suggest distraction and maybe supply a bg with some bits of cheese or sausage for training rewards.

He is a cocker (I don't know why I wrote springer above apart from I was thinking about a previous dog when I wrote it) and excitement is in his bones. He still pees on my feet when excited as my old springer did until he was about 2.

Yes, excitement/play is usually the problem, especially with puppies. My girls also hump each other during play. I suspect the reason he is not humping the older bitches or dog is simply that they wouldn't tolerate it and he knows that.

Distraction is the key and rewarding him when he does call away from them. Neutering may or may not help prevent the behaviour, but I wouldn't neuter now soley for that reason as you may then need to 'cure' it behaviourally anyway.