Yes.
| State | Name of relevant act/special conditions and requirements |
| ACT | Yes for dogs, not for cats. A dog must be registered to a keeper if it is over the age of 56 days, has changed keeper for 28 days, or is owned by a person who has been a resident for 28 days. Domestic Animals Act 2000. |
| NSW | Yes. A dog and cat must be registered to a keeper if it is over the age of 6 months. Companion Animals Act 1998. |
| NT | No. |
| QLD | Yes for dogs. A dog over the age of 12 weeks must be registered. For cats - in some council areas. Animal Management (Cats and Dogs) Act 2008. |
| SA | Yes for dogs. A dog of 3 months age must be registered. For cats - in some council areas. Dog and Cat Management Act 1995. |
| TAS | Only for dogs. A dog over the age of 6 months must be registered. Dog Control Act 2000. |
| VIC | Yes. A dog and cat must be registered if it is over 3 months old. Domestic Animals Act 1994. |
| WA | Yes. A dog 3 months or older must be registered. Dog Act 1976. A cat over six months must be registered. Cat Act 2011. |