Population ecology is the study of these and other questions about what factors affect population and how and why a population changes over time. Population ecology has its deepest historic roots, and its richest development, in the study of population growth, regulation, and dynamics, or demography.
When giraffes walk, they move both legs on one side of their body and then both legs on the other side; this is unique to giraffes. However, they run in a similar style to other mammals, swinging their rear legs and front legs in unison. They can reach 55 km/h (35 mph) at full speed but only in brief spurts.
the legs of a giraffe are also 6 feet 1 8 meters long the back legs look shorter than the front legs but they are about the same length a giraffe s heart is 2 feet 0 6 meters long and weighs about 25 pounds 11 kilograms and its lungs can hold 12 gallons 55 liters of air its closest relative is the okapiou might think watching out for lions and spending 16 to 20 hours a day eating would all weigh heavily on a giraffe surprisingly enough giraffes only need 5 to 30 minutes of sleep in a 24 hour period they often achieve that in quick naps that may last only a minute or two at a time