Researchers say that few primates mate in a face-to-face position, known technically as ventro-ventral copulation; most primate species copulate in what's known as the dorso-ventral position, with both animals facing in the same direction.
Bonobos and humans are the only primates to typically engage in face-to-face genital sex, although a pair of western gorillas has also been photographed in this position.
Face-to face copulation occurs in about 1/3 of matings; this behavior is almost unknown in chimpanzees. Females may copulate several hundred times for one conception as do chimpanzees.
Mating is done while both gorillas are on the ground with the female (which is normally smaller than the dominant silverback) appearing to kneel on the ground while the male is on top throughout the copulation.
No, gorillas and chimpanzees cannot mate. The two species are evolutionarily too distant and their DNA is too dissimilar for a gorilla and a chimpanzee to produce offspring.
Due to the much larger evolutionary distance between humans and monkeys versus humans and chimpanzees, it is considered unlikely that true human-monkey hybrids could be brought to term.
Interbreeding between animals of different lineages is widespread in nature—and may reveal some of the mysteries of evolution. Hybrids between brown bears and polar bears—called pizzlies or grolar bears—may become more common as temperatures warm and the species' ranges overlap.
Gorillas
Gorillas are animals that have sex for pleasure, and females will engage in lesbian sex when males reject them. In fact, many species of primates are notorious for their homosexual behavior. Scientists have observed female gorillas climbing on top of each other and pushing their bellies and genitals together.
1. Brown antechinus. For two weeks every mating season, a male will mate as much as physically possible, sometimes having sex for up to 14 hours at a time, flitting from one female to the next.
Thus, privacy, or perhaps more accurately, seclusion, allowed the male to maintain control over a sexual partner—while also allowing for continued cooperation within a group.
But studies have shown that direct eye contact with macaques can be taken as a sign of aggression or threatening behavior.
Male monkeys can mate 10 times a day and females can give birth twice a year.
Among the primate order, homosexual behavior is most frequently observed in bonobos. However, it also occurs in other species, such as Japanese macaques and capuchin monkeys.
Oral sex has been observed throughout the animal kingdom, from dolphins to primates. Bonobos have been observed to transition from a simple demonstration of affection to non-penetrative genital stimulation. Animals perform oral sex by licking, sucking or nuzzling the genitals of their partner.
Monkeys mate via the process of mammalian sexual reproduction / copulation, where a male sex cell (i.e. sperm) ultimately fertilizes a female sex cell (oocyte or egg), giving rise to progeny. Note that, depending on the species, monkeys may be monogamous, polygamous or highly promiscuous.
Depends on what animals, and what you mean by attractive. You could argue that higher functioning pets, like dogs, find humans attractive, though not in a sexual sense. They clearly desire companionship and contact with humans.
Not only do animals enjoy the deed, they also likely have orgasms, he said. They are difficult to measure directly but by watching facial expressions, body movements and muscle relaxation, many scientists have concluded that animals reach a pleasurable climax, he said.
In fact, such human-animal hybrids are often referred to as “chimeras”.
The vast majority of animals need to breed to reproduce. But a small subset of animals can have offspring without mating. The process, called parthenogenesis, allows creatures from honey bees to rattlesnakes to have so-called “virgin births.”
When a female gorilla is ready to mate, she will approach the dominant male slowly, make sustained eye contact and purse her lips. Should the male not respond, she will attract his attention by slapping the ground as she reaches towards him.
Gorillas have been caught on camera for the first time performing face-to-face intercourse. Humans and bonobos were the only primates thought to mate in this manner. And while researchers have observed wild gorillas engaged in such an act, it had never been photographed.
Ethical considerations preclude definitive research on the subject, but it's safe to say that human DNA has become so different from that of other animals that interbreeding would likely be impossible.
Most animals show no reluctance to mate with close relatives, even immediate siblings, the authors claim. Even among humans we know the incest taboo has not always been as strong as it is today – the Pharaohs suffered consequences for frequently marrying their siblings, but still ruled Egypt for thousands of years.
Although they rarely meet in the wild, lions and tigers are still so closely related that they are able to interbreed, and in captivity they occasionally do. But successful interbreeding is the key, and the hybrid offspring are usually sterile and short-lived.
No baby is born in such circumstances. It is impossible for one species to impregnate a member of another species. Good thing too, or we'd have alligators breeding with elephants.