How you introduce your new cat to other household pets may influence long-term relationships between the animals. Allow your new cat and your existing pets to experience gradual positive interactions over the course of a few days. As the animals begin to demonstrate an acceptance of each other allow them to interact under your supervision. The Humane Society of Boulder Valley recommends keeping your new cat separate from your existing pets in your absence until you are confident in their interactions. If you observe interactions that are aggressive, separate the animals and contact our Training and Behavior Center at 303-442-4030 x368.