Our intact 3 year old has taken to humping her spayed sister, we stop it as soon as we see it, but I think it's a confidence thing with the new youngster and the dog sat girl having just been spayed and having to be kept separate. Hoping that she'll calm down as everything gets back to normal.
I grew up not far from the Whitaker farm and riding school, Micheal and John had nothing handed to them on a plate! There are two other brothers who also worked on the farm. Their father, Donald ran a mixed livestock farm and tight did not begin to describe him. In common with other farming...
If you have two pups together, you have to be interesting to them, so that they don't learn to ignore you. One of the rotters was quite happy to leave her sister and her people to get into trouble😁. I'm pretty sure she'd have been the same if she'd been an only dog.
Dad's elderly black lab had a washing basket full of toys, which she had shared with her sister. She had two reindeer, which she kept to give to visiting dogs. She gave them to the visiting Dalmatian and staffy and then to the rotters when they were little.