They sleep in a semi-erect posture, with the head resting between the knees, and the tail and hands wrapped around the branch. Lemurs live in large groups consisting of females and males. There are usually more males than females in the group. Females tend to be dominant. Sexual behavior is seasonal, probably ocurring between April and June.
Lemurs come in all sizes.
Closely related Indris are the largest and there are lemurs that are about the size of a mouse. Lorisinae - Galagos Galagos are found in the tropical rainforests of Africa, from the Guinea Coast to the Congo river and to the edge of the Rift Valley. They tend to live in the low bushes of the forest, not more than 30 feet above the ground. They are nocturnal and are omnivorous, but show a tendency to eat insects and the gum from trees. Galagos use urine marking as a way to establish territory.