Quokkas have little fear of humans and commonly approach people closely, particularly on Rottnest Island, where they are abundant. Though quokkas are approachable, there are a few dozen cases annually of quokkas biting people, especially children. There are restrictions regarding feeding. It is illegal for members of the public to handle the animals in any way, and feeding, particularly of "human food", is especially discouraged, as they can easily get sick. An infringement notice carrying a fine can be issued by the Rottnest Island Authority for such an offence. The maximum penalty for animal cruelty is a fine and a five-year prison sentence.