Other commercial products include rubber, palm products, and sugarcane. Subsistence crops include plantains, sweet potatoes, cassava, corn, and millet. Livestock raising is important in the Adamawa Plateau region. In the early 1990s the livestock population included 4.7 million head of cattle, 3.6 million goats, 3.6 million sheep, and 1.4 million pigs. Forestry and Fishing Timber is traditionally one of Cameroon's most valuable exports, consisting mainly of mahogany, ebony, and teak.
Fishing is dominated by freshwater subsistence activity.
However, deep-sea fishing activity is increasing, especially from the port of Douala. About 78,000 metric tons of fish are caught annually. Offshore petroleum exploitation began in the late 1970s, and an oil refinery has been built on the coast at Limboh Point. Cameroon's output of crude petroleum, mostly for export, reached 61 million barrels a year during the early 1990s. Small amounts of gold and tin concentrates are also produced.