Jack is 3.5 years old. We have two cats as well and he is very good with Cats. No children in the house .. but I do have a 19 year old Autistic son and he is not getting along with him. He does not seem to understand him and my son is not comfortable with Jack. Otherwise .. Jack is a very friendly Dog .. Understands basic commands. Loves to play .. needs attention and someone who can work with him. He desperately wants to work .. to play. Very attentive.