Dog professionals work in a very litigious and risky business. Many go into the business because they love their family pet but, like all beings, dog can make bad decisions that are risky for dog professionals.
Texas' animal cruelty bills are rarely useful in addressing crimes against animals. The bills that would fix them are not just for animal people because it helps people who hurt animals get into the system that can offer them help before they abuse children and the elderly.
Trades and other employers often avoid formally engaging their employees but creating a set of documents for each employee and independent contractor is a point of sophistication and protection for employers.