The task was to compare the bone structure between a human and an animal. However, after discovering it is fairly common for injured turtles to need additional support, I took it a step further and compared the wheel structure as well.
Everyday Quests 
How to Hatch a Dinosaur 
Grackle Calendar 
Creatures of the Deep Sea 
Still Kicking 
M&M’s: A Colourful Guide 
Structural Mobility 
Titans
The work of Sam Gill 