UJI 13-506. Liability of dog owner.

An owner of a dog is liable for damages proximately caused by the dog if the owner knew, or should have known, that the dog was vicious or had a tendency or natural inclination to be vicious. [The owner of such a dog is not liable to the person injured, if the injured person had knowledge of the propensities of the dog and wantonly excited it or voluntarily and unnecessarily got in the way of the dog.]