Watch CNBC's full interview with Discovery CEO David Zaslav on Q4 earnings beat

Discovery earned 76 cents per share for the fourth quarter, 4 cents a share above estimates. Revenue also topped Wall Street forecasts and Discovery said its Discovery+ streaming service was on pace to have 12 million subscribers by the end of the month. David Zaslav, president and CEO of Discovery, joined "Squawk Box" on Monday to discuss.