GSDs are smart, obviously, but does your dog do any particularly sneaky things?
Kind of a classic example, but Lara figured out how to remove the lid off the trash can. When no one is around I will hear her nosing it off and come in to find her snout under the edge, then she gets the guilty face. She's never successfully stolen something out of the trash though
She will also sneak into my bedroom and when I go in there to see what she's up to, she will grab a ball she has stashed nearby so it doesn't look like she was being naughty, but sometimes I find wet socks nearby and such