[4] Begnaud started his television career as a teen reporter, while in high school, at KLFY TV 10 in Lafayette, LA.

When he walked into his first day of college at the University of Louisiana at Lafayette, Begnaud's instructor asked if he was the man she'd seen anchoring the evening news the night before.

Begnaud went on to anchor the weekend morning and evening editions of Eyewitness News, while attending college during the week.

[7][2][1] From various locations in Puerto Rico, Begnaud filed multiple reports of conditions on the ground that were broadcast through CBS News.

His social media accounts have been hailed for helping keep followers in the mainland US informed about the conditions in Puerto Rico.

Begnaud came out publicly on June 24, 2018, by posting a picture with his partner after seeing pride celebrations in New York City.

In 2023, David was honored with the Alumni Lifetime Achievement Award from the National Speech and Debate Association.