Do you know?

What do these pictures have in common?


Irene said...

All subjects are not human
All photos taken outdoors
All have a E in their names
All have skeletons
All are smiling (I'm optimistic on the giraffe)

Big Red said...

They are endangered species (I know the ivory-billed woodpecker is. They won't quit talking about those things in Arkansas.)

The Math Ninja said...

They have all been used as currency. Porpoise teeth, giraffe tails, and woodpecker scalps. :)