That is not something I am aware of is a problem in rotties. Hip dysplasia, arthritis (and other big dog diseases), cancer- specifically bone cancers (osteosarcomas) are the things I hear are most common in the breed. I've never heard of any heart problems.
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My cat is smarter than your honor student.
Stop Dog Fighting ~ Neuter Mike Vick!
~ RIP Timmy ~ May 2009 - November 6th 2009
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