Question: how long does it take for a dog to get congestive heart failure?
Answer: All 54 dogs had successful resolution of initial Stage C congestive heart failure. The median time during which dogs were in stage C before advancing to advanced heart failure was 163 days (range, 10–743 days). At the time of diagnosis of advanced heart failure, dogs' mean age was 10.9 ± 1.9 years.