Two sick and malnourished lion rest inside their cage at Al-Qureshi Park. AFP
Hajjar told AFP on Sunday that park officials often paid for food for the lions with their own money.
The park is managed by Khartoum municipality but funded in part by private donors.
Sudan is experiencing a worsening economic crisis, with food prices soaring amid a foreign currency shortage.
An online campaign under the hashtag #SudanAnimalRescue calling to help save the lions has grown over the past few days.
It is unknown how many lions are in Sudan, but a population lives in Dinder National Park on the border with Ethiopia.
African lions are classified as a "vulnerable" species by the International Union for Conservation of Nature.
Their population dropped 43 percent between 1993 and 2014, with perhaps only 20,000 left in the wild.
"The UAE emphasised the importance of resuming talks among various Sudanese forces to realise the aspirations of the brotherly people of Sudan," said the statement.
Sudan is bracing for a two-day nationwide strike from Tuesday called by protesters to pile pressure on the military to hand power to a civilian administration as talks remain deadlocked.
The protest “#VoicefortheVoiceless: a peaceful demonstration against animal cruelty” took place outside the Islamabad Zoo on August 10th, 2019.
Russian President Vladimir Putin said in the same interview that he didn't use a mobile phone. He had access to a special official phone, he said, that could connect with any number he wanted.
The decision comes a day after two cases of coronavirus were reported in Pakistan. Both the infected people had recently visited Iran, where the number of people affected by the virus has grown drastically in the past few days. Health officials have said both were "stable."
The victim was stabbed several times. An autopsy is being carried out on the body for further investigation.
A city in China's Hubei province, the epicentre of the global coronavirus epidemic, will pay residents as much as 10,000 yuan ($1,425.96) if they proactively report symptoms of the illness and it is confirmed after testing.
Qianjiang, a city of around one million people located about 150km from the stricken provincial capital of Wuhan, has reported a total of 197 cases so far and is stepping up efforts to ensure its infected people are confined and treated.