In what circumstances will the owners of a dog walker be held liable for injuries sustained by the complainant on the basis of negligence?

McFarlane J.A., in Kirk v. Trerise et al., supra, considered whether the owners should be held liable for the complainant's injuries on the basis of negligence. He said at p. 646 D.L.R., p. 681 W.W.R.: I find no difficulty in placing the appellants under a duty to take reasonable care to see that the respondent, who may be regarded as their guest, would be reasonably safe from injury which might be caused to her by their dog and which they did or ought to foresee. In my opinion the same reasoning applies here.