Fido
[ˈfaɪdoʊ]Meaning
from Latin fidus, "faithful"; a stereotypical name for dogs
Background Story
Fido comes from the Latin fidus, meaning "faithful", by way of the Spanish or Italian fido. It is used as a given name in Spanish. It is a stereotypical dog's name, and the usage is old: a newspaper from 1760 advertises a small white greyhound with a collar that answers to the name of Fido. A direct derivation from the Latin fido, "to trust, rely on", rather than through the Romance form, is folk etymology.

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