The White House blasted North Korea's state media on Friday after it described President Obama as a "wicked black monkey” in an editorial.
"While the North Korean Government-controlled media are distinguished by their histrionics, these comments are particularly ugly and disrespectful," said National Security Council spokeswoman Caitlin Hayden.
A pair of news stories from North Korean state news agency KCNA earlier this week described the president as "crossbred with unclear blood" and slammed his recent visit to rival South Korea.
The report went on to blast South Korea's President Park Geun-hye as an "old prostitute," and suggested Obama "should live as a monkey in an African natural zoo licking the breadcrumbs thrown by spectators."
While in Seoul, Obama vowed to stand "shoulder to shoulder" with South Korea in response to threats from Pyongyang. Obama said he believed Beijing was beginning to see North Korea as "not just a nuisance but a significant problem to their own security" and pledged to seek additional means to apply pressure against the regime there.
During the visit, Pyongyang appeared to be readying another nuclear test, earning condemnation from Obama.
"Threats will get North Korea nothing other than greater isolation," Obama said. "We’re united on the steps Pyongyang needs to take, including abandoning their nuclear weapons and ballistic weapons programs and living up to their international obligations."