“The Dwarf Crocodile can be found in streams and lakes in Western Africa. They can grow up to five feet long. It is now fairly rare as it was hunted for its skin. One distinguishing feature this animal has is a "short" snout as compared to other members of the crocodile family.” The Children’s Museum of Indianapolis, IMCPL Digital Collections
Using coins for scale is discouraged as it will require people unfamiliar with them to look up the dimensions or guess, both of which defeat the purpose of the object in the first place. Coins can also reinforce a geographical bias, and some coins' designs are copyrighted.
Ideally, a photograph should include a ruler with the subject (example) or an added scale marking.
SI ("metric") units are the most commonly used worldwide (see meter and centimeter).
{{Artwork |artist= |title= |description= A Dwarf Crocodile (Osteolaemus tetraspis) in the permanent collection of The Children’s Museum of Indianapolis |date= |medium= |dimensions= |institution={{Institution