Myxomatous mitral valve disease in Labrador Retrievers and Golden Retrievers.

Objective: To characterize myxomatous mitral valve disease (MMVD) in Labrador Retrievers (LRs) and Golden Retrievers (GRs).

Methods: 52 LRs and 20 GRs diagnosed with MMVD composed a retrospective study sample (February 1, 2010, to July 31, 2021). Stored echocardiograms were remeasured.