Waldo is a new addition but we are already impressed by this sweet boy. He's about 3-4 years old with a gentle and happy nature. He has been non-reactive towards other dogs and should be able to share a home with at least a large female. Whether he can live with a male or a small dog may depend on the individual dogs. Waldo is crate trained, quiet and has a medium energy level that should be a good fit for many different types of homes. He needs to gain a few more pounds on his frame but he is in otherwise great shape.