Introducing unfamiliar animals requires a gradual process involving scent exchange, auditory cues, visual contact, and finally tactile interaction to reduce the risk of aggression.

“So then you might have them in different rooms and you might rub one cat with one towel and rub one the other cat with another towel and then exchange towels and then you might want to gradually incorporate other sensory modalities too so that they'll start hearing each other and finally that they start seeing each other and then at the end the tactile so the actual physical contact.”