Hi guys! We have a 4 and a half month yellow lab puppy and he just seems very lazy to me. He never really chewed up the furniture, but did "read" a letter to shreds once and used to pull the dirty laundry out of the laundry basket when left home alone (for a few hours). He also used to run around with his squeaky frog and football, and try to get up on the couch to us. Nowadays he just seems lazier at home. He still follows us from room to room, but sortof just plops down when he's in the door. He just sleeps or lies around chewing on his stick or chewie, not really interested in running after any toys, and less enthusiastic about playing tug. There used to be more puppy biting, and he still likes to nibble on our hands, but it's also getting less and less. He doesn't seem lethargic or depressed, and does perk up when there are treats around or when we are going outside. Outside he happily sniffs around, tries to greet every human, chases the pigeons, and wants to run up to all the other dogs. We take him to this giant park every morning and afternoon where he can run around and play with other dogs and try to eat everything in the park. We are also trying to housetrain him, and we are taking him downstairs every 3-4 hours, even at night, which he hates and protests when we take him after 9 pm. My boyfriend works from home most days, and obviously he has to work, can't just play with him all day. Is he just getting used to the fact that there are just quiet and boring times in the apartment? Is he tired from all the walks and pee trips? (we live in a 2-story walkup, but we carry him up and down the stairs). Is he just growing? Any experience like this? Sorry for the wall of text, he is our first pup, and I am watching him very closely and worrying about everything.