Texas law supports imposition of liability in three instances pertaining to injuries caused by animals. First, the possessor of a domestic animal is strictly liable if that animal has known vicious propensities and that animal injures someone. Secondly, the owner or keeper of an animal may be held liable for the negligent handling of that animal even if the animal is not vicious. Finally, a landlord is negligent if a vicious dog injures someone in an area controlled by the landlord and the landlord had actual or imputed knowledge of the dogs' vicious tendencies. Also, local ordinances may establish a duty or standard of care pertaining to what is required of dog owners.