Dairy free yoghurts are also available in most supermarkets as well as health food shops. Coconut ones are amazing, give them a try!
Here is a list of some brands available in New Zealand. See their website for details and full list of flavours.
= Vegan Society business member
= Some or all products are Vegan Certified
Website: Raglan coconut yoghurt
Website: Coconut Collaborative
Website: King Intl