Eye dilation from eye drops used for examination of the eye usually lasts from 4 to 24 hours, depending upon the strength of the drop and upon the individual patient.
Fossa. Fossas are the largest carnivores in Madagascar. Secretive and cat-like, these predators are well equipped for chasing down lemurs in the forest. They are famed for having some strange development, courtship and breeding traits. As they grow, female fossas go through a period of 'masculinisation' during which their genitals resemble those of a male. Breeding takes place in the autumn when a female attracts a large number of males.
Like the majority of the animal and plant species that are found on the island of Madagascar, the Fossa is found nowhere else on Earth.They rely on dense, forested areas where there is not only an ample food source but also plenty of space where the Fossa can establish it's large territory.he Fossa is the largest land predator on the island of Madagascar with some individuals growing to nearly two meters in length from their snout to the tip of their long and slender tail.