Monkey mandrill, almost long and weighing up to . Some are arboreal (living in trees) while others live on the savanna; diets differ among the various species but may contain any of the following: fruit, leaves, seeds, nuts, flowers, eggs and small animals (including insects and spiders). Some characteristics are shared among the groups; most New World monkeys have prehensile tails while Old World monkeys have non-prehensile tails or no visible tail at all. Old World monkeys have trichromatic color vision like that of humans, while New World monkeys may be trichromatic, dichromatic, or—as in the owl monkeys and greater galagos—monochromatic.
Non-reproductive sexual behavior in animals one of these two bonding. Homosexual parenting is very common, especially in birds. Homosexual pairs have better skills and larger nests than heterosexual pairs. Homosexual pairing can occur different ways, one example would be two female animals with offspring coming together and helping each other raise their offspring. Genital-genital rubbing, or GG rubbing, among non-human animals is sexual activity in which one animal rubs his or her genitals against the genitals of another animal. The term "GG rubbing" is frequently used by primatologists to describe this type of sexual intimacy among female bonobos, and is stated to be the "bonobo's