Nicaragua (Spanish: República de Nicaragua, IPA [re'puβlika ðe nika'raɰwa]) is a representative democratic republic and the largest nation in Central America. It is also the least densely populated with a demographic similar in size to its smaller neighbors. The country is bordered by Honduras to the north and by Costa Rica to the south. The Pacific Ocean lies to the west of the country, while the Caribbean Sea lies to the east. Falling within the tropics, Nicaragua sits 11 degrees north of the Equator, in the Northern Hemisphere.

The Island of Ometepe was formed by two volcanoes rising from Lake Nicaragua in the Republic of Nicaragua. Its name derives from the Nahuatl words Ome = two and Tepetl = mountain, meaning two mountains. The Volcanoes, Concepción and Maderas, are joined by a low isthmus to form one island, giving it the form of an hourglass. Ometepe has an area of 276 km². It is 31 km long and 5 to 10 km wide. The island has a population of 35,000, and an economy based on livestock, agriculture, and tourism.

The howler monkeys (genus Alouatta monotypic in subfamily Alouattinae) are among the largest of the New World monkeys. Nine species are currently recognised. Previously classified in the family Cebidae, they are now placed in the family Atelidae.

Howler monkeys range in size from 56 to 92cm, excluding their tail which can be equally as long. Like many New World monkeys, they have prehensile tails. They have a lifespan of 15 to 20 years. These monkeys are native to South and Central American forests. They live in groups of usually about 18 individuals. Threats to howler monkeys include being hunted for food and captivity.