We had a 12 year old GSD and an 16 year old cat. We had to put down the old dog and got this one as a 4 month old pup. Try as she may to befriend the old cat, it just wasn't happening. Then the old cat died and we got this one. He was 9 months old when he met the then 17 month old GSD.
My 2 females go to the vet tomorrow. I weighed them yesterday and 1 was 82 and the other 83 lbs. The 82 lb. one is a medium sized shepherd that is only 2 years old and already looks like she is a candidate for Jenny Craig. The other is 7 months old but a jumbo sized shepherd so she can still do with another 30 lbs.