I take all precautions seriously. I follow the instructions and advice left to me by the owners. Even if a person has a fenced in back yard, I do not leave an animal unattended. If the dog is crate trained, I will make sure they are safely crated before leaving the home. If they are not, I still make sure the area is safe and there is nothing the dog could easily get into. For dogs this is food, things to chew on, cleaning products etc. For cats this also includes string which can be super dangerous for cats. I also stay in contact with owner, and am not afraid to ask questions or alert someone if I am worried the animal is acting abnormally. I say its better to ask, than to have a situation get worse. I have a dog who gets along extremely well with other dogs. He has no desire to be the boss, and is more than happy to be the submissive one during play. If the owner has a dog friendly dog, I may ask if I can bring my dog Paimon along. He just loves loves loves to play with dogs. If I do ask, and you are uncomfortable with me bringing him, please don't worry about saying no. Your comfort is the first priority.