Cats Cat desexing Cat desexing is mandatory in Australia for cats born after 1 July 2018. Cat owners Being a cat owner comes with many responsibilities including desexing, microchipping, and microchipping (with registration). Cat microchipping Cat microchipping is compulsory in Australia for cats born or adopted after 1 July 2018. Neighbour's cat (nuisance) While cats make great companions we understand that uninvited cats trespassing on your property, such as a neighbours cat, can be a real nuisance. Stray cats Stray cats and similarly feral cats become nuisances when they make themselves at home on your property.