S can be very shy with new people but he has never been aggressive towards people. Occasionally he will show dominant behaviors with younger dogs but this only occurs while he is off leash which will not apply to your service. He does not like puppies or small children. Again, he has never been aggressive towards kids or had any biting behaviors with other animals. He does have separation anxiety when I leave and will sometimes hide under my bed, or lick his paws when he's nervous. He does not like swift movements or loud noises so please be mindful of that.