Two lions in a shield, heraldic design from the book The Scots in France, the French in Scotland published by Trübner & Cie… Free Image from public domain license 
Snake and a sword in a shield, heraldic design from the book The Scots in France, the French in Scotland published by… Free Image from public domain license 
Snake by Kōno Bairei (1844-1895). Digitally enhanced from our own original 1913 edition of Barei Gakan. Free Image from public domain license 
1-3. Bengal Snake (Coluber Bengalensis); 4-7. Lozenge Snake (Coluber rectangulus) from Illustrations of Indian zoology (1830… Free Image from public domain license 
1. Side Streaked Tree Snake (Dendrophis lateralis); 2. Reddish Dipsus (Dipsus rubescens) from Illustrations of Indian zoology… Free Image from public domain license 
1. Spotted Bellied Snake (Coluber ventromaculatus); 2. Bell's Tree Snake (Ahætula Bellii) from Illustrations of Indian… Free Image from public domain license 
Asp Viper illustrated by Edme François Jomard for Description de l'Égypte Histoire Naturelle (1809-1828).… Free Image from public domain license 
Rattlesnake (Crotale) and Saharan horned Viper (Cerastes) illustrated by Charles Dessalines D' Orbigny (1806-1876). Digitally… Free Image from public domain license 
Coral Snake (Elaps Corallinus) and Egyptian Cobra (Naja Hoje) illustrated by Charles Dessalines D' Orbigny (1806-1876).… Free Image from public domain license 
Banded Cobra Capella (Naia tripudians) from Illustrations of Indian zoology (1830-1834) by John Edward Gray (1800-1875).… Free Image from public domain license 
Wampum Snake (Anguis) from The natural history of Carolina, Florida, and the Bahama Islands (1754) by Mark Catesby (1683… Free Image from public domain license 