Looks like a cinnamon roll, and is a cinnamon roll:
Wassermann,
Waage,
Zwillinge

Looks like a cinnamon roll but would kill you:
Krebs,
Schütze,
Jungfrau

Looks like they could kill you, but is actually a cinnamon roll:
Fische,
Löwe,
Steinbock

Looks like they could kill you, and actually would:
Skorpion,
Widder,
Stier