I treat other peoples' pets as if they are my own fur babies. My pets are so important to me and trusting someone else to look after them is difficult. I always let the animal know that I am friendly and approachable by letting them smell me/check me out on their own time. I let them approach me because I don't want them to feel threatened or forced into a relationship they don't want to be in. I find that initiating play is a good way to build trust with pets because it helps you to get to know each other. My cats are indoor, so I'm very cautious about leaving doors open. When I walk dogs, I make sure the leash is on before opening the door. I always follow the owner's instructions for how to take care of their pets. For example, my friend trained their dog to wait until they told him he could go eat his food, so when I watched him, I made sure to do that same process.