What is the one-bite rule?
The one-bite rule is a common-law doctrine holding that a dog owner is liable for injury only if they knew or should have known the dog posed a danger, typically proven by a prior bite or aggressive act.
Under the one-bite rule, a dog owner is not automatically liable for injury caused by their dog. Instead, the injured party must prove the owner had prior knowledge, or should have had knowledge, that the dog was dangerous. This knowledge usually comes from a previous bite, attack, or demonstrated aggressive behavior. The dog literally gets "one free bite" before an owner can be held responsible.
Texas courts recognize the one-bite rule but apply it through a negligence framework. An owner can be liable if they failed to exercise reasonable care knowing the dog's dangerous propensities, or if they should have known the dog posed a threat based on its behavior or breed characteristics. Some Texas courts also consider whether an owner knew of specific incidents involving the dog, such as prior escapes, lunging, or growling at people.
The rule differs from strict liability states, where owners are liable regardless of prior knowledge. In Texas, the burden falls on the injured party to demonstrate the owner's awareness or constructive knowledge of danger. This makes prior incidents and witness testimony critical to dog bite injury claims. An owner's negligence can still result in liability even without a documented previous bite if evidence shows they should have known the dog was dangerous based on its behavior, training, or care history.