Depiction of Ali Hassan Mwinyi facing right, surrounded by the inscription "Ali Hassan Mwinyi The Second President of Tanzania". Date below.

Ali Hassan Mwinyi (born May 8, 1925 in Kivure, Pwani Region, Tanzania) is a retired second President of the United Republic of Tanzania from 1985 - 1995. Previous posts include Interior Minister and Vice President. He also was chairman of the ruling party, the Chama Cha Mapinduzi (CCM) from 1990 to 1996.

Mother rhino with calf and an oxpecker on her back, value above.

A rhinoceros (meaning "nose horn"), often abbreviated to rhino, are some of the largest remaining megafauna. The black rhinoceros or hook-lipped rhinoceros (Diceros bicornis) is a species of rhinoceros, native to eastern and southern Africa including Botswana, Kenya, Malawi, Mozambique, Namibia, South Africa, Swaziland, Tanzania, Zambia, and Zimbabwe. Although the rhinoceros is referred to as black, its colors vary from brown to grey.

An adult black rhinoceros stands 140–180 cm (55–71 in) high at the shoulder and is 3–3.75 m (9.8–12.3 ft) in length. An adult typically weighs from 800 to 1,400 kg (1,760 to 3,090 lb). Two horns on the skull are made of keratin with the larger front horn typically 50 cm (20 in) long, exceptionally up to 140 cm (55 in).

Despite being solitary creatures, the black rhino does share a symbiotic relationship with another species. Oxpeckers, or tick birds, sit on the rhino and eat ticks, blood sores and even warn the rhinos of danger.