JD and Brandy came from the same litter, so they really are brother and sister. Even though they came from the same litter, they are very different in appearance. Brandy has the typical thin body/long legs that you see in min pins. JD on the other hand is shaped like a brick. He is a little shorter and VERY solid. He has been shaped like this since we got them at 8 weeks of age. We didn't really think much of it until the last time we took them to the vet. JD weighed 13.7 lbs and Brandy weighed 8.7! They eat the same food, eat the same amount of treats, and they play together all the time...JD is just built different. But this past weekend we might have a different explanation as to why JD is our fat boy. As you can see in the pictures, Brandy is playing with her toys and JD is sitting (like a person) just watching. Maybe JD isn't as active as we thought!