thats such a sweet story. The same kind of thing happened with my old dog. Years later we discovered that my dad's friends dog was Our dog's brother. Oddly enough both were named Max. However their Max started life rough. Poor fella was hit by a car the second or first day they got him, SO our dog's couldn't have play dates, as my dog was just too healthy & strong to play with his weaker smaller brother.

The Bitch's litter had 2 fathers, on differnt days (it was very odd)... My dog was younger, yet 2-3 times larger then his older long haired brother. His Brother lived to about 7ish. They had him PTS as he was in too much pain & couldn't walk any longer, due to the accident when he was a pup.