Some pets hold their place like background music — soft, steady, always there. Others crash into the room like the opening chord of a rock song, all noise and fire and chaos. Billie and Hank are both: a duet of wild puppy energy and seasoned calm, playing side by side. Billie is the spark. She’s young, messy, and relentless with her love — the kind of pup who will bury you in kisses and then, five minutes later, leave a puddle as her encore. She pushes Hank into play, tugging at his patience until his old-soul eyes give in and the calm big brother is running again, tail flying. She’s…