Are lions and eagles on hearaldry, actually dragons?

Double-headed Lombardo-Venetian eagle, apparently of Masonic origin

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Arms of Sirmione in the

province of Brescia

 

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Eagle on past German flag

 

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Brescian lion

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Venetian lion

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Above: South Tyrolian eagle.... Below: "Rodan" of Japanese movie fame

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Classic German eagle

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