A group of flightless Papua New Guinea birds known as "cassowaries" communicate through the dense foliage of the jungle by means of extra-low frequency sound waves - partly below the range of hearing of humans. People near a cassowarie calling in their lowest register, would feel, rather than hear the sound - much like the low-frequency calls of elephants, which can be heard up to 50 miles (80 km) away. Cassowaries are among the world's most dangerous birds: weighing up to 125 pounds (56 kg), they kick when fighting, and have a "spike" on their feet which can rip a person open, with sometimes fatal results. They are also nearly extinct, due to poaching and hunting by loggers and increasing populations of some native peoples in the region. (Source: Net Scientia)
Deceased person's hair and nails do not continue to grow following death...