Paragraph 2
A
described the jerboa. She said its
measures about 10 centimetres. Its
are 3.8 to 5cm long. They are 40 to 50 per cent as long as its body. Elephant's ears are just 17 per cent of its body
. The zoologist said: "The jerboa has the
ears for the
of its body in the entire animal kingdom." She said jerboas usually live in very hot places. Their
ears help them to keep cool in the heat. Their ears are
and have many tiny blood
. Blood releases heat from the body into the air. This helps the
cool down.
