The legislative scheme
15Ms Simon sued Ms Condran pursuant to s 25 of the Act, which is relevantly in these terms:
"(1) The owner of a dog is liable in damages in respect of:
(a) bodily injury to a person caused by the dog wounding or attacking that person, and
(b) damage to the personal property of a person (including clothing) caused by the dog in the course of attacking that person.
(2) This section does not apply in respect of:
(a) an attack by a dog occurring on any property or vehicle of which the owner of the dog is an occupier or on which the dog is ordinarily kept, but only if the person attacked was not lawfully on the property or vehicle and the dog was not a dangerous dog or restricted dog at the time of the attack, ..."
The section does not apply if the dog's attack is in immediate response to and is wholly induced by the intentional provocation of the dog (s 25(2)(b)) or if the dog is a police dog (or, since 2010, a corrective services dog) (s 25(3)). Section 25(4) preserves any other liability which would exist aside from the section.
16Section 12A, introduced by the Companion Animals Amendment Act 2006, is also central to this appeal. It provides:
"12A Preventing dog from escaping
(1) The owner of a dog must take all reasonable precautions to prevent the dog from escaping from the property on which it is being kept.
Maximum penalty:
(a) 8 penalty units except in the case of a dangerous or restricted dog, or
(b) 50 penalty units in the case of a dangerous or restricted dog.
(2) For the purposes of subsection (1), owner of a dog includes the person who is for the time being in charge of the dog."
17The provision which became s 25 may be traced fairly directly to s 9 of the Dog Act Amendment Act 1875 (39 Vic No 6):
"The owner of every dog shall be liable in damages for injury done to any person property or animal by his dog and it shall not be necessary for the party seeking such damages to show a previous mischievous propensity in such dog or the owner's knowledge of such previous propensity or that the injury was attributable to neglect on the part of the owner."
18That in turn derived from, but was an expansion of, s 1 of the (English) Dogs Act 1865 (28 & 29 Vic c 60), which confined the statutory liability to damage done to cattle or sheep. As the New South Wales Law Reform Commission reported in 1970 (Civil Liability for Animals, Report No 8 at 24), "[i]n view of the history of the legislation in respect of dogs in New South Wales it is not surprising that this liability without fault for injury done by a dog was not limited, as in the United Kingdom, to injury to cattle or sheep". For, as the Commission set out at 23-24, there had been earlier colonial legislation in New South Wales, commencing in 1830 with 11 Geo IV No 8, a temporary Act revived and continued in 1835 by 6 Wm IV No 4, both of which imposed penalties and dealt with the liability of dog owners. (Hence Edmund Barton's expression of irritation on amendments to the draft Constitution proposed by the Colonial Office, "This is a Constitution and not a Dog Act": see JA La Nauze, The Making of the Australian Constitution (1972) Melbourne University Press at 186.)
19Section 9 of the 1875 colonial Act was reenacted as s 19 of the Dog and Goat Act 1898 and s 20 of the Dog Act 1966. All of this colonial and State legislation imposed liability in unqualified terms. Of the 1898 Act the joint judgment in Simpson v Bannerman (1932) 47 CLR 378 at 383 said that "the very generality of its terms provokes attempts at restriction by implication". The breadth in scope of the legislation was noted by Basten JA in Sarkis v Morrison [2013] NSWCA 281 at [10].
20The Law Reform Commission considered that leaving the question of exceptions to the courts to determine by way of implication was unsatisfactory (at 25), and proposed (at 33) a qualification to the effect that the liability did not apply "in the case of an attack by a dog occurring on any land vehicle or other premises of which the owner of the dog is an occupier; or on which the dog is ordinarily kept". That recommendation was enacted by the Dog (Amendment) Act 1977 (see Sarkis at [11]) and is the immediate antecedent to s 25 of the Act.
21Although the only damages claimed under the Act were damages to Ms Simon pursuant to s 25, it is necessary to construe the Act as a whole. Section 27 makes the owner of a dog liable in damages in respect of injury (whether or not fatal) to another animal (other than vermin) caused by the dog attacking or chasing it. Section 27(2)(a) provides that the section does not apply in respect of:
"a dog attacking or chasing another animal on any property or vehicle of which the owner of the dog is an occupier or on which the dog is ordinarily kept, but only if the dog is not a dangerous dog under this Act at the time of the incident..."
22It will be seen that the liability imposed by the legislation of 1875, 1898 and 1966 for injury done to "any person, property or animal" was divided by the Act into separate bases of liability: s 25 for damage to a person or his or her personal property, and s 27 for damage to another animal. As will be seen from s 25 and s 27, additional obligations are imposed in the case of "dangerous dogs" or "restricted dogs"; it was common ground that Mack fell into neither category. Additional obligations are also imposed upon the owners of greyhounds by s 15 (principally, and speaking generally, they must be muzzled except when on the property occupied by their owner), but even if Mack were a "greyhound", s 15 would not apply because Mack was at all times on Ms Condran's property.
23Dogs which are in a public place must be under the effective control of a competent person by means of an adequate chain, cord or leash attached to the dog: s 13 (there are exceptions including for areas designated as "off-leash areas", for working dogs and for police and corrective services dogs). The owner of a dog commits an offence if the dog (even if leashed) is in certain places including a children's play area, a school or a child care centre (except with the permission of the person controlling the school or centre) and a wildlife protection area: s 14 (there are exceptions for police and corrective services dogs, and assistance animals). The owner of a dog also commits an offence if the dog "rushes at, attacks, bites, harasses or chases" any person or animal, whether or not causing injury: s 16(1). However, s 16(2) provides that it is not an offence if the incident occurred as a result of the dog being teased, mistreated, attacked or otherwise provoked, as a result of the person or animal trespassing on the property on which the dog was being kept, as a result of the dog acting in reasonable defence of a person or property, in the course of lawful hunting or working stock or in the case of a police or corrective services dog.
24It is convenient immediately to identify the following propositions flowing from the legislative scheme. First, the Act recognises that the owners of all dogs have responsibilities, because all dogs are capable of causing harm to persons (especially young children) and other animals. The Act differentiates "dangerous dogs", "restricted dogs" and, in one respect, greyhounds from all other dogs, and imposes greater obligations on their owners.
25Secondly, although the liability imposed by the Act is both criminal and civil, ordinary principles of construction require all provisions of the Act to be read harmoniously. "The primary object of statutory construction is to construe the relevant provision so that it is consistent with the language and purpose of all the provisions of the statute": Project Blue Sky Inc v Australian Broadcasting Authority [1998] HCA 28; 194 CLR 355 at [69] (emphasis added).
26Thirdly, s 12A, although inserted by amendment, is to be construed together with the unamended provisions: Commissioner of Stamps (SA) v Telegraph Investment Co Pty Ltd (1995) 184 CLR 453 at 463. As Bathurst CJ said in R v Seller [2013] NSWCCA 42 at [100]:
"Where a statute is amended both the act which is amended and the amending act must be read together as a combined statement of the will of the legislature as a consequence of which the effect of the amending act may be to alter the meaning which the remaining provisions of the amended act bore before the making of the amendments".
27Fourthly, the provisions in the Act imposing both criminal and civil liability recognise the importance of dog owners being free to keep their dog unleashed in their own property, not least for security. In respect of criminal liability, it is an offence to fail to take all reasonable precautions to prevent a dog escaping its owner's property (s 12A), while it is not an offence for a dog to attack or bite a person as a result of the person's trespassing on the property on which the dog was being kept (s 16(2)(b)). In terms of civil liability, the owner of a dog (which is not a dangerous dog) is not liable for damage to another animal where the dog is on property of which its owner is an occupier or on which the dog is ordinarily kept (s 27(2)(a)). Nor is the owner of a dog (which is not a dangerous or restricted dog) liable for damages in respect of bodily injury to a person if the attack occurred on property of which its owner is an occupier or on which the dog is ordinarily kept, so long as "the person attacked was not lawfully on the property" (s 25(2)(a)).
28Fifthly, it may be said that the civil liability created by s 25 and s 27 of the Act is "strict" (language used by the primary judge) or "no-fault" (language used on appeal). But there is danger in using such labels, and no advantage is thereby gained, for the only question is one of statutory construction: CTM v The Queen [2008] HCA 25; 236 CLR 440 at [149] (Hayne J). The liability created by s 25 and s 27 is not dependent upon any breach of duty on the part of the dog owner, from which it follows that the liability is not regulated by Part 1A of the Civil Liability Act 2002. Although that Part applies to claims brought under statute, it is confined to claims for damages for harm resulting from "negligence", negligence here meaning a failure to exercise reasonable care and skill: s 5 and s 5A.
29The language of s 25 (and for that matter s 27) creates a liability on the part of an owner of a dog in the circumstances to which it applies. It will have been seen that the liability is replete with qualifications, including as to the nature of the dog and the location of the attack. There is a marked contrast between the Act and the legislation prior to 1977. Given the detailed articulation of sections imposing and qualifying the imposition of liability, there is little occasion for any further process of implication.
30Sixthly, it was and is common ground that when Mack bit Ms Simon on 11 November 2009, s 25(1) was satisfied. The only provision relied on by Ms Condran is s 25(2)(a). That paragraph operates only if "the person attacked was not lawfully on the property" and the dog was neither a dangerous nor a restricted dog. As noted above, it was and is common ground that Mack was neither a dangerous nor a restricted dog. Hence the critical question was whether Ms Simon was not lawfully on Ms Condran's property at the time of the attack.
31The parties proceeded on the basis that Ms Simon bore the onus of proving that the preconditions of the liability imposed by s 25(1) were satisfied. That meant that it fell to her to negate the non-application of the subsection by s 25(2)(a). Accordingly, as the primary judge held, it fell to her to demonstrate that she was lawfully on her neighbour's property.
32Finally, the word "lawfully" takes its meaning from the context: Crafter v Kelly [1941] SASR 237 at 243. There is regularly a question whether in a particular context it means positively authorised, as opposed to not forbidden: see eg Taikato v The Queen (1996) 186 CLR 454 at 460 and 469. In the present case, it was not suggested that "not lawfully" meant anything other than the absence of a positive authority or entitlement to be present on the land. Questions which might arise in other cases might include was the person an invitee? Was there an implied licence? Was there some statutory authority (for example, to repair electrical works, or measure a utility meter)? But the parties litigated this issue on two bases: necessity and s 22. Separately, Ms Condran said that the effect of s 12A in its application to the facts meant that Ms Simon could not lawfully be on the property. I deal with each submission separately below.