The ninguai is found in Australia. The maximum weight of a ninguai is twelve grams. This make it on of the smallest marsupials. These animals only live for 12 to 18 months. They weigh twelve grams for most of their lives. They eat grasshoppers, centipedes, and door spiders. They also eat the occasional lizard,. Ninguais breed once in their life, during the summer. They have a litter of six or seven.