Keepers at the West Midland Safari Park are working round the clock to care for more than 600 animals during the freezing weather.
Bob Lawrence, Director of Wildlife, says the snow is making their usual work even harder.
Nearly all of the animals at the safari park are being let out each day in the cold weather.
More than 40 different species live at the attraction near Kidderminster in Worcestershire.
Bob says one of the main challenges in the sub-zero temperatures is watching out for if any of the animals give birth.
The park's latest arrival is a baby antelope which was born yesterday. When keepers see an animal is about to give birth they immediately try and get it back inside.
One area of the park which needs special attention is the ringtail lemur enclosure.
It's surrounded on three sides with a fence, with a lake on the fourth side. If that freezes over there's the risk the 24 animals could all escape, or fall into the icy water.
Everyday staff have to break the ice before they let the animals out for feeding.
The park has its own gritters and snow ploughs to keep the site clear so keepers can access all the animal enclosures for daily feeding.
Despite many of the site's residents being designed for much warmer climates, staff say they seem to be taking the sub-zero temperatures in their stride.