George is not neutered, so he's... "sexually frustrated." I read that this can be a dominance thing too. He likes to satisfy his "frustrations" on furniture, and sometimes people. We immediately pull him off people and give him a stern "no," but he isn't deterred. The rescue says he won't be neutered until his heartworm treatments are done.
Okay - mounting is also a way that stressed and anxious dogs blow off steam. Or it's what they do when over-excited and hyped up. Especially if they were not trained early on not to mount things. It's tougher dealing with the behavior when the dog is an adult and never was trained.
Keep in mind it's not just a sexual type thing. And be patient.
If he's mounting people, dogs, furniture, laundry piles, blankets, his bed, toys whatever else looks mountable... distract him and train him to calm down.
George is desperate for attention. Always. He seems to do well when we leave him home alone, but he is constantly at our sides begging for either attention or food. I'm not really sure how to break him of this habit. When he begs for attention, I found that ignoring him is the only way to get him to settle down -- but it takes him a while to get the hint. When he begs for food, I don't know what to do other than lock him in another room.
Again - this is an anxiety and insecurity thing. And remember these dogs don't really do well having long periods of being isolated and alone. It builds up their anxiety and excitement levels when you are home, and there is probably a little seperation anxiety going on. This poor dog's life has been messed up and he's gone through a lot of changes.
George's prey drive is really strong and we have an indoor cat. We've had to keep the two separate since George first came here. I've been giving them limited, supervised time together, but George is just too aggressive. He doesn't just roughhouse, he tries to bite the cat every chance he gets. Consequently, I've had to hold him by the collar or keep him on his leash whenever I give them "limited interaction time."
Keep him on leash and put up baby gates or give the cat perches to stay out of the dog's reach.
We have a cat who ENJOYS roughhousing with our dogs. The benefit when I brought Jacks home was it stopped our cat from harassing my older dog.
I never would have considered doing such a thing before we got George, but my wife and I bought him a muzzle earlier today. I thought he would learn to stay away from the cat as long as he couldn't bite. Unfortunately that didn't happen. He immediately backed the cat in the corner and tried slamming him against the wall, all before getting scratched on the nose. I felt awful after this exercise... all it did was terrify our cat and give George a bloody nose.
You know, reading this tells me that you may not be the right foster for this dog. It's clearly giving you anxiety, and you were not prepared possibly for a "busy" and anxious dog.
Do not feel like you are a failure if you turn him back to the rescue and give him a chance to go to other fosters who have dealt with an anxious dog like him.
And this is also a way you can provide information to the rescue regarding this dog and the homes he would do best in.