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.
Emirates flight EK733 departs from Dubai at 14:50hrs, arriving in Khartoum at 17:10hrs. EK734 departs Khartoum at 18:45hrs, arriving in Dubai at 00:40hrs, the following day.
The male cub is "Singapore's very own Simba,” referring to the iconic Disney animated film Lion King. It is rare for lions to be conceived through artificial insemination, with the procedure first carried out successfully in 2018 -- resulting in two cubs in South Africa.
Flights to six destinations will resume on Friday, and on Saturday services to Boston, Houston and San Francisco will return to Boeing 777 planes after having been changed to Airbus A380s, the Dubai-based carrier said in a statement.
Regarding the news on the suspension of some flights to certain US airports due to 5G deployment, the Telecommunications and Digital Government Regulatory Authority (TDRA) has clarified that this issue is exclusively related to the relevant US airports.
According to a 12-month study of traveller reviews and ratings over the period between Nov.1, 2020 and Oct.31, 2021, Dubai got the highest rank and was the most-favoured spot all around the world.
Nineteen-year-old Zara Rutherford landed back at Kortrijk-Wevelgem Airport in Belgium after flying 51,000 km (32,000 miles) over 52 nations https://flyzolo.com/route since her Aug. 18 departure in the world's fastest microlight aircraft.