My Bp loves to climb on the hydrometer/thermometer combo I have in her tank.
This used to work fine when she was a small little thing, but now she's much bigger and the hydrometer is only attached by velcro. So now everytime I stick it back on that night I'll hear a slow ripping noise followed by a "thunk" as she and the hydrometer fall down. But she still climbs up there every single time.