Revealing the young Ju Ae came as a huge surprise to foreign experts, as Kim Jong Un and his father Kim Jong Il were both first mentioned in state media dispatches after they became adults.
The UN Security Council has passed nearly a dozen resolutions imposing sanctions on North Korea over its nuclear and missile activity since 2006.
Kim Yo Jong's vitriol follows Seoul this week saying it was considering fresh unilateral sanctions on the North over recent missile tests, including an intercontinental ballistic missile launch
She said North Korea would consider the US-led statement "a wanton violation of our sovereignty and a grave political provocation".
The daughter apparently is Kim's child who retired NBA star Dennis Rodman saw during his trip to Pyongyang in 2013.
Friday's launch was part of the North's ongoing barrage of missile tests that are seen as an attempt to expand its weapons arsenal and boost its leverage in future diplomacy.
It’s the first time for North Korea’s state media to mention the daughter or publicize her photos.
North Korea has dialled up its weapons demonstrations to a record pace this year as leader Kim Jong Un exploits the distraction created by Russia’s war on Ukraine.
Moon and Yoon’s spat over the dogs sparked criticism online, with users lamenting that the animals were being treated only as properties.
The North’s announcement underscored leader Kim Jong Un’s determination not to back down in the face of his rivals’ push to expand their military exercises.
Analysts say ongoing US-South Korean military exercises are a key factor and warn that Kim is building up to another nuclear test.
The country revised its nuclear laws last month to allow pre-emptive strikes, with Kim declaring North Korea an "irreversible" nuclear power.
Four new cases of 'fever symptoms' in North Korea are suspected to have been caused by coronavirus infections.
Seen delivering a speech on TV for the first time, his powerful sister said Kim had suffered a fever while glorifying his "epoch-making" leadership, and she blamed the virus outbreak on South Korea.
She warned that Pyongyang was considering "a strong retaliatory response", adding that if balloons continued, "we will respond by eradicating not only the virus, but also "South Korean authorities".
North Korea will likely intensify its threats against the United States and South Korea as the allies prepare to expand summertime exercises the North views as an invasion rehearsal, say observers.
The North's elevated restrictions on movement's in the wake of the COVID-19 outbreak could cause a further strain on the country's economic difficulties, some experts say.
Kim defended his accelerating weapons development as a rightful exercise of sovereign rights to self-defence.
The flight came a day after the allies fired eight surface-to-surface missiles into South Korea’s eastern waters.
North Korean leader Kim Jong Un could further escalate his brinkmanship by conducting what would be the country’s seventh nuclear test since 2006.