That guy may even choose his house. : )

hermit crab

Hermit crabs ... have adapted to occupy empty scavenged mollusc shells to protect their fragile exoskeletons.

It seems legs are not the defining feature when it comes to housing.

Now, turn it 45 degrees and put a different colored square behind each one

Turtles: The Pinnacle of Evolution.

Waiting on the inevitable "wait til you hear about crabs" response 😁

Where Saddam Hussein? He has house and legs, both can be seen in the only picture of Saddam Hussein.

Babe, wake up! New political compass just dropped!

Missed opportunity for a sweet Venn diagram.

me on the left

It's missing the popular, aquatic category of Crab models.

✅ Legs ✅ House ✅ Fully/Semi Aquatic

Then again at that point you'd need to break it down by species...