CHRISTMAS has come early for zookeepers at Wild Life Sydney Zoo, who are thrilled to have received two infant kangaroos just in time for December 25.

The orphaned joeys who are too young to survive on their own in the wild, are receiving around-the-clock care after their mother was sadly killed by a car, leaving them orphaned.

"These baby roos are the best Christmas present we could have ever received," zookeeper Emily Paterson said.

"Due to their young age, they are completely dependent so they are with me everywhere I go. I am absolutely loving playing surrogate mum to them!

"We named them Dawn and Dusk after the term 'crepuscular', which means most active at sunrise and sunset, which describes their behaviour perfectly."

At the young age of just seven months, and weighing about 5kg each, Dawn and Dusk are being treated like special cargo and have the zookeepers on their toes and in absolute adoration of their cuteness.

"They really have us wrapped around their little paws!" Ms Paterson said.

"These sisters are like two peas in a pod, but personality wise, they are so different.

"The little one, Dusk, is very smoochy and loves a cuddle, whereas Dawn, the bigger one, is a bit more independent and likes to explore and play."

Dawn and Dusk will continue to receive full-time supervision from the Wild Life Sydney Zoo team and once they're stronger and have met certain milestones will join the rest of their roo pals in the attraction's Kangaroo Walkabout exhibit.

Lucky guests will have a chance to meet the joeys at 1pm daily, feed the older roos or catch a glimpse of the zoo's newest koala joey, Jonah, this festive season.

Wild Life Sydney Zoo, which is found in Darling Harbour in the city centre, is open every day of the year including Christmas Day, so if cuddling a baby kangaroo is what the doctor ordered this silly season, you're in luck!