Wyvern and more as dangerous beasts smaller, weaker, and less intelligent than dragons. While a fantasy dragon often has a breath weapon, such as fire, wyverns rarely have such abilities and are more feared for their ferocity and sharp teeth and claws. Wyverns are sometimes associated with poison, either in the form of venomous fangs or poisonous breath, but this trait is not universally represented and may be a more recent addition to the lore based on the gila monster. A wyvern will typically be unable to speak, while a dragon often does have that ability. The wyvern features frequently in
Lion (heraldry) to Heraldry" (1829): English heraldist Charles Boutell wrote in 1890 that the lions of England were generally termed "leopards" until the end of the 14th century, including in the roll of arms of Henry III of England, and in a statute of Edward I of England, dating to 1300, which made reference to ""signée de une teste de leopart"—marked with the King's lion." In "English Heraldry" (1867), Boutell explained: In "Heraldry: Sources, Symbols and Meaning" (1976), German heraldist Ottfried Neubecker explained: According to Neubecker, what in Old French is termed a "léopard" is always "guardant" (head turned toward the observer),