Past tense of dognap; stole or kidnapped a dog.
From dognap + -ed (past tense marker). This recent coinage follows standard English past tense formation, though it's interesting that 'dognaped' is sometimes alternatively spelled 'dognapped' with double-p.
The spelling variation between 'dognaped' and 'dognapped' shows how English is still in the process of standardizing this very new word—a real-time example of language change!
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