💂การ์ดคุ้มกันA guard. Means security, protection and standing watch. Use it for security staff and "guard dog" jokes.
🐕🦺สุนัขบริการA service dog in a harness. Means assistance dogs, accessibility and loyal helpers. Use it respectfully for support-animal topics. Alternative: 🐕🦺 (the emoji's official name) — same character.
🥼เสื้อกาวน์A lab coat. Means science, medicine and experiments. Use it for research, doctors and "back to the lab". Alternative: 🧪 (test tube), 🔬 (microscope).