Cats are masters of disguise. And just like the highly-trained ninja, they can attack without warning, and, well, that’ll be all she wrote for you, my friend.

The cats in these photos are so stealthy you might not even be able to spot them. You’ve been warned!

1. Sly

Photo Credit: Sad and Useless

2. Can you spot the cat?

Photo Credit: Sad and Useless

3. Like liquid

Photo Credit: Sad and Useless

4. Where’s the kitty?

Photo Credit: Sad and Useless

5. Camo

Photo Credit: Sad and Useless

6. Lampshade

Photo Credit: Sad and Useless

7. Hang in there!

Photo Credit: Sad and Useless

8. Scaling the walls

Photo Credit: Sad and Useless

9. ????????

Photo Credit: Sad and Useless

10. Hahahaha

Photo Credit: Sad and Useless

11. Just a hint of the ears

Photo Credit: Sad and Useless

12. Kick to the face!

Photo Credit: Sad and Useless

13. Hiding in plain sight

Photo Credit: Sad and Useless

14. Whatever works

Photo Credit: Sad and Useless

15. I see you

Photo Credit: Sad and Useless

Keep your eyes peeled and watch your back!