Spencer is a 1 year old Border Collie / Australian Shepard mix, born in October of 2004. We adopted him through BARK. Spenser is an incredibly active playful, and quite flexible. I have never seen a dog that loves hugs all the time and will sit on your head even though he is a 50 pound dog! However, Spenser is afraid of people. Sounds strange, but he is. Give him lots of treats and spend sometime with him, and you will have a friend for life. It took about a week, but now Kelsey and Spenser are playing quite a bit, they will play bite each other and roll around, there will be a video of this once I capture it. Speaking of play biting, we gave him a nickname, alligator, you can hear his teeth when he is in his playful biting mood with his huge overbite. Spenser is a welcome addition to the house.