Hippos are gregarious animals, associating in herds of up to 4O individuals, consisting of an adult bull, a number of cows and their young. Young bulls are evicted from the herd upon reaching sexual maturity. Adult bulls are extremely territorial and one of the known ways used for demarcation of their territories is their characteristic way of defecating. They spray the faeces over a shrub or rock by the rapid flicking of their short tail.
Territorial fights amongst hippos, are vicious and very often fatal. Fights can go on for hours, each of the contenders trying to inflict deep gashes on their opponent with their razor sharp and enormous incisors. There are very few adult hippo bulls without scars. Lone bulls find refuge in their own pools from where they launch their attacks on a herd bull, in an attempt to take over his harem.
A mother and a baby grazing are depicted on the reverse side of this 1/4 oz gold coin together with the word "Natura" and the denomination "R20". On the obverse side a portrait of a hippo is featured together with the words "South Africa" and the year "2005".
|Metal Content:||Au 999.9|
|Reverse Artist:||N van Niekerk|
|Obverse Die-sinker:||A Minnie|
|Obverse Artist:||N van Niekerk|
|Purity:||24 carat Gold|
|Estimated Market Value: 2008||R2,000|
|Estimated Market Value: 2009||R3,750|
|Estimated Market Value: 2013||R4,000|
|Estimated Market Value: 2014||R4,500|