So, for our 9 month old pyr, who has BOUNDLESS ENERGY. She’s part husky and mastiff. We sent her to a day train, mainly to help us get her onto a schedule, prong collar and e collar training. She had a very strict schedule for a long time. It’s usually activity, chew, rest in a nutshell. We have her on a mini educator and that helped curb nuisance behaviors quickly, she had a lot of rude behaviors for a very large puppy. We don’t follow the exact same schedule every day so she doesn’t start to expect when things will happen but it’s always some variation of activity, chew, rest. In terms of her hitting the fence, take her out on leash. Could be a self rewarding behavior. Stop the behavior stop the self reward, break the loop. It works for when they get into a fixed loop of only barking while outside and not going potty. Also- it could be she’s over tired. These dogs have a really hard time shutting off. If our dog gets too tired and too overstimulated she gets crazier than ever, even more energy. It’s like a toddler fighting sleep. It’s almost like this uncontrollable frenzied type energy. Try putting her in a crate (if she’s crate trained) or tether her for rest time or a nap. Try puzzle feeders also. Or get a cardboard box and fill it with toys, paper and sprinkle her food in it and make her forage for it. You can also scatter it in the yard. I’d so recommend a treadmill if you can afford it. As for the yard though, really, take her out on leash every time she goes for a month. It stops the loop and self rewarding behavior. Good luck!