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.
Sadly like a number of the unique animal species found in Madagascar today though, the Fossa is incredibly rare and is now considered to be endangered in it's natural habitat primarily due to habitat loss.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.