Coccydynia, commonly called tailbone pain or coccyx pain, is a fairly rare and relatively poorly understood condition that can cause persistent pain at the very bottom of the spine. This part of the spine is the coccyx, or tailbone.
Grazing is a method of feeding in which a herbivore feeds on plants such as grasses, or other multicellular organisms such as algae. In agriculture, grazing is one method used whereby domestic livestock are used to convert grass and other forage into meat, milk and other products. Many small selective herbivores follow larger grazers, who skim off the highest, tough growth of plants, exposing tender shoots.
Grazing differs from parasitism as the two organisms do not live together, nor is the grazer necessarily so limited in what it can eat (see generalist and specialist species). Water animals that feed for example on algae found on stones are called grazers-scrapers.hile hippopotamuses rest near each other in the water, grazing is a solitary activity. Their incisors can be as long as 40 cm and the canines up to 50 cm, however, the canines and incisors are used for combat and play no role in feeding.