Dozer is 3 1/2 years old, and Harley is 4 months. The first night was actually very good! Dozer went to check on Christopher, then laid down at the foot of our bed on the floor. Harley was good too. They are starting to accept eachother. Dozer gets annoyed with Harley, but he puts up with him. Its actually pretty funny!!! Harley is wound up ready to play and Dozer is laid back. Merry Christmas everyone!!! I love playing Santa for the boys!!!! Especially knowing that we gave Dozer a good loving home!!