The Blue Giraffe mystery extends far deeper. Together with Mtengeni he observes not just the animal in question but another giraffe with a goat-like beard, only six feet long, a green hippopotamus with pink spots, and a two-headed rhinoceros. Other creatures are so mutated their very survival is threatened, and Mtengeni is concerned about the long-term prospects of the animal population. Establishing camp in the bush, the two are separated when the warden goes out into the night for firewood and Cuff, hearing what he takes for a native woman's scream from another direction, heads off to investigate. He finds the woman, treed
Giraffe to reach the leaves of tall trees. This theory was eventually rejected, and scientists now believe the giraffe's neck arose through Darwinian natural selection—that ancestral giraffes with long necks thereby had a competitive feeding advantage (competing browsers hypothesis) that better enabled them to survive and reproduce to pass on their genes. The giraffe genome is around 2.9 billion base pairs in length compared to the 3.3 billion base pairs of the okapi. Of the proteins in giraffe and okapi genes, 19.4% are identical. The two species are equally distantly related to cattle, suggesting the giraffe's unique characteristics are not because