Is a curved back(topline) genetically passed on? I am still waiting for my female to go into heat (8 months since her last heat) and have found a third tiny stud (2lbs 10 oz.). Two of the three tiny studs have curved toplines. The male with a perfect back has only bred one female and her puppies died, so I am hesitant to use him. The other two have successfully bred puppies, but as mentioned have noticeably curved toplines -- is this passed on genetically or is this just common in tiny yorkies? |