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.
Cryptoprocta ferox, as the fossa is known scientifically, is the largest carnivore unique to Madagascar, and it can reach at least 28 pounds in weight and stretch a full six feet from dog-like snout to tip of long brown tail. Dollar told me there are unsubstantiated reports of fossa up to 44 pounds.