Muppet with a puppy named Tango (4)

I believe the answer is:

elmo

(Other definitions for elmo that I've seen before include "Puppet character" , "St ----'s Fire: aura from electrical discharge" , "St ...'s fire, weather phenomenon of coloured glow" , "Saint associated with fire" , "Saint whose fire is electric!" .)

I've seen this clue in the USA Today.

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