Researchers believe that macaques have sex for pleasure because their sexual behavior is similar to humans. For example, macaques experience elevated heart rates and vaginal spasms when mating.
Oral sex has been observed throughout the animal kingdom, from dolphins to primates.
Studies propose that animals do not only enjoy having sex but also have orgasms. Moreover, it is nearly impossible to measure directly, but their facial expressions, body movements, and muscle relaxation hint at a pleasurable climax during their sexual intercourse.
Up until now, scientists have been aware that dolphins possess clitorises (much like all female mammals), but they weren't sure whether they experienced pleasure. Research now confirms that the animals do experience pleasure when having sex, due to their “large” clitorises.
Monkeys reproduce without human interference, so their offsprings' characteristics are determined by natural selection. Captive bred monkeys may be intentionally bred by their owners. A person who intentionally mates monkeys to produce babies is referred to as a monkey breeder.
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. However, it is feasible that human-compatible organs for transplantation could be grown in these chimeras.
Really wild orgasms 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.
a) Dogs and cats are not like people when it comes to sex. They don't cycle the same way and there's no evidence, behaviorally or otherwise, that sexual activity brings them any specific pleasure akin to orgasm, for example.
Bonobos and other primates will have sex while pregnant or lactating – seemingly just for the joy of it – while short-nosed fruit bats engage in oral sex to prolong their bouts of intercourse (there might be evolutionary reasons for this, but it could also be for fun).
A half man/half dog wouldn't get very far past a single cell (assuming the egg and sperm could even come together!). This is because dogs and people have very different sets of instructions in their DNA. Their genomes are simply too different to come together and make something that will live.