Turns out, the snake never left the House of Reptiles, where it was found by workers just after 9am Thursday morning, officials said.
The cobra is now under observation. The zoo hopes to give it a clean bill of health and put it back on exhibit.
Workers had no problem catching the snake after spotting it. They used specially designed equipment.
The cobra vanished from an enclosure, forcing the Bronx Zoo to close its Reptile House while workers searched for the missing reptile.
The roughly 20-inch-long Egyptian cobra - a highly venomous species of snake - had been unaccounted for since Friday afternoon.
Zoo officials were confident it hasn't gone far. Its enclosure was in an isolation area not open to visitors.
"To understand the situation, you have to understand snakes," zoo Director Jim Breheny said in an email Sunday.
The animals seek out confined spaces, so this one has doubtless hidden in a place it feels safe, he said.
Meanwhile, the Twitter account of someone purporting to be the slithering escapee now has more than 200,000 followers.
It had written about "Sex and the City," saying: "I'm totally a SSSamantha."
And it tweeted while staring from atop the Empire State Building: "All the people look like little mice. Delicious little mice."
The user behind BronxZoosCobra refused to identify him or herself or say who was typing the tweets.
Its last tweet, "If you see a bag of peanuts inexplicably moving along the ground at Yankee Stadium today. Just ignore it. It's probably nothing."
Opened in 1899, the Bronx Zoo is run by the nonprofit Wildlife Conservation Society.