Zack is maturing.
He is solidly housetrained. He always asks to go outside. Maybe he will make some errors in the future, maybe not, but he clearly gets it now. This has happened in the last two or three weeks, no 'accidents' in that time. He is 5 1/2 months now.
I used to keep him in his crate when i was sleeping or at work. Then, a couple of weeks ago, i got a pen that i put around his crate and leave the door to the crate open, and he has a decent amount of room to move around in and i feel better putting him in the pen than i did about putting him in the crate.
I put in him the pen at night when i go to bed. This morning when i got up, he was waiting for me by the gate that i installed on the stairs to keep him away from the catbox and the cat's food. He was not in the pen. He had the run of the kitchen and living room. I was so tired last night, i forgot to close and latch the little door to the pen. And, the good news is, nothing was chewed up as far as i can see. I know that it's not going to be safe to leave him unsupervised for a while still, but I am very pleased with how last night went. This happened one other time that i forgot to close the pen door and i went to work. when i got home, i found he had gotten up on the coffee table and he chewed up a couple of important things. I've been consistently indicating disapproval when he shows interest in the top of the coffee table. He does get these things gradually.
I also see him trying to control himself when he feels like lunging at the cat. my little boy is growing up.
but he's still that playful bouncy puppy, acting silly and cute.