The space in the thoracic cavity between the concave inner surfaces of the lungs, in which (in a special pericardial cavity) the heart is located, is called the mediastinum. The thoracic cavity is lined with a serous membrane called the pleura. The lungs are enclosed in the so-called pleural cavities, which are separate in man but communicate with one another in the majority of mammals. The shape of the thoracic cavity depends upon the shape of the thorax and the position of the diaphragm.
We sell 5 hammock sizes on the Traditional Hammocks (no spreader wood bars). Therefore, the length of the hammock is the same for each size but the difference is the width. Width gives the size. The larger the size, the wider and bigger the hammock.
This is the animal that most people associate with the word 'hamster', and was originally known as the 'Golden' hamster. They are the larger and chunkier of the hamsters kept as pets, usually about 4 to 6 inches in length. This animal is solitary by nature and the golden rule is one Syrian hamster to one cage. The animals only meet to mate, after which the female drives the male away.