Cal Bus & Prof Code 4826.1
Good Samaritan Law: Veterinarian
A veterinarian who provides emergency care to a sick or injured animal at the scene of an accident will not be held legally responsible. They can be held legally responsible if acting with extreme carelessness. Generally, Good Samaritan laws only offer protection for those individuals who provide care during spontaneous emergencies unrelated to volunteer deployment.
Immunity from liability for damages
A veterinarian who on his or her own initiative, at the request of an owner, or at the request of someone other than the owner, renders emergency treatment to a sick or injured animal at the scene of an accident shall not be liable in damages to the owner of that animal in the absence of gross negligence.