Marsupials are so interesting because they give birth to tiny live young, which then live in their pouch for many months. Take Sydney, the Southern Hairy-Nosed Wombat for example. The wombat keepers first saw movement in the pouch when Sydney was three months old. They were very excited because only one other of that species has been born in the zoo for 30 years. They had to wait another five months to get a proper look at her. 

"We didn’t know for sure that we’d been successful until we saw a little foot pop out of the pouch," said keeper Brett Finlayson.

"Sydney still sleeps very close to her mum, but she’s starting to get more adventurous each day and it looks like she’ll be an energetic little one as she grows up."