A popular family cafe in Sydney's inner suburbs is offering a $5,000 reward for the return of two star attractions in the cafe's animal nursery which were stolen overnight.

The Grounds on Huntley Street in Alexandria is a popular cafe with a farm house theme, with hay bales dotted around the courtyard and an animal nursery.

The star attraction, a pig named Kevin Bacon, was stolen overnight along with a lamb called Bradley.

Police from Redfern say they were called to the cafe about 2.30am (AEDT) and say CCTV footage shows two women and a man breaking into the cafe about an hour earlier, stealing the animals from their pen and leading them out.

Police are appealing for anyone with information on the whereabouts of the animals to contact them.

Meanwhile, a beer-swilling pig named Swino, who made international headlines after stealing beer from a West Australian campsite, has died after being hit by a car.