I have 2 young dogs, one is 1.5 years old, and the other is 7.5 months. They are both Chocolate Lab/Blue Heeler mixes. So I know by nature they are very high energy! They wrestle and play 24/7, bark and yell and anything and everything that walks past our house.
Does it ever stop?! Will they ever calm down?? hahahahah
We give them TONS of exercise too, we bring them to the dog park daily for about and hour, and 2-3 times a week, we even walk them for 30-40 minutes after the park. I could probably try and up the mind stimulation a little bit. But man, they are hyper!!