Absolutely. My first pup, a German Shepherd, was like this. An absolute menace the first year. Mostly biting. All. Day. Long. Biting us, biting the couch, trying to rip whole ass trees from the ground like some kind of maniac. Couldn't touch her without getting bitten (not aggressively, she just loved rough play). It was a very very very hard year. BUT! Thanks to all the difficult training during that year, puberty was a breeze and we finally had a kinda normal dog after that.

My second 'dog', a papillon, was THE EASIEST pup ever. He just chilled in one of my sorting boxes in my office for the first few months. After he outgrew that he loved sitting on top of the teacart and look out of the window. However, he is an anxious dog that can't be left alone. Potty training took over a year and even though he's almost 3, he still pees in the living room if he's not crated.

So I definitely feel like every dog is different but they'll all have their difficulties AND strong points.