Yes, cirrhosis is the last stage of liver failure (after "fibrosis").

Liver failure in dogs is diagnosed through a complete blood workup. Liver failure is a serious condition that requires you to work closely with your dog's veterinarian.

Liver failure is a serious chronic medical condition which requires treatment. Liver failure signs and symptoms include ascites (swelling of the abdomen), gastrointestinal bleeding, encephalopathy, and dilation of blood vessels on the abdomen. Untreated liver failure may be fatal.

To much alcohol can cause liver failure.

A heart attack itself will not directly damage your liver unless it's related to long term heart failure. If you have right-side heart failure, your liver will not be affected. If you have left-side heart failure your liver may become enlarged.