Fin Whales - Greyhounds of the Sea - 20 Knots Easy
Communication research with these species (and maybe a few others) may contribute in preventing further cruelty towards them and, as a side effect, in making our own species more sane.
Alex died quickly. He had a sudden, unexpected catastrophic event associated with arterosclerosis ("hardening of the arteries"). It was either a fatal arrhythmia, heart attack or stroke, which caused him to die suddenly with no suffering. There was no way to predict his demise. All of his tests, including his cholesterol level and as per levels, came back normal earlier that week. His death could not be connected to his current diet or his age; our veterinarian said that she has seen similar events in young (<10 year old) birds on healthy diets. Most likely, genetics or the same kind of low-level (impossible to detect in birds as yet) inflammatory disease that is related to heart disease in humans was responsible. We will have no further information.