Bestiality should be illegal in all cases in the United States

My conditions of victory state that I must prove bestiality should be illegal in the US in all cases. HOWEVER, likewise I ask my opponent not to give an impossible or extremely unlikely scenario to ensure victory, to make this a fair debate. "If the only reason that humans cannot have sex with animals is lack of consent, Pro loses because there are clear examples of animals that can give consent. Chimpanzees have advanced cognition and language skills, including the ability to learn human sign language.[1] In theory, a person could teach a chimpanzee enough sign language so that the chimpanzee could actually consent to sex with a human." "An intelligent alien species that met this characterization would therefore be considered an "animal." If this alien species was equally as intelligent as humans, it could most definitely consent to sex with humans. I don"t think anyone would contend that it would be immoral for the two main characters in Avatar to have sex, even though one was a hyper-intelligent blue alien female and other one was a normal human male." Rebuttal 1. Animals cannot consent Based off the information provided by my opponent, I will accept his/her claim that at least some animals will voluntarily engage in sexual intercourse with a human being. When engaging in any sexual activity, especially unnatural sexual activity, there is a risk for receiving a Sexually Transmitted Disease (STD) or a Sexually Transmitted Infection (STI). Even condoms don't guarantee that this won't happen. http://www.theguardian.com... Even if these microfractures don't exist, the birth control device used could tear. Also, such devices are not made for animals, as far as I know. Of course, I could be wrong about this. No matter how clever a monkey or a dolphin might be, you cannot make them aware of this risk. Therefore, in this way they cannot decide for themselves whether this behavior is safe or not. They'll simply engage in sexual activity because they're animals, and they want to do it. As for the aliens, this is an extremely unlikely scenario, and unless the existence of extraterrestrial life is proven, this argument is irrelevant. Let me add something else: my family has had a cat (we still have her), three dogs, chickens, and goats. And guess what: none of these animals have ever tried to do with a human (as far as I know) what you're talking about. Also, if most pets were prone to do this, countless disgusted pet owners would euthanize or give away their animals. My conclusion: it must be relatively rare for an animal to do this. Also consider that only a tiny percentage of animals in the Animal Kingdom have been domesticated. The rest will run from human beings. Rebuttal 2: Humans Have No Right To Do This To Animals Yes, humans are allowed to own animals and slaughter them for food. HOWEVER, humans are not allowed kill animals in an excruciating way. Many sexually transmitted diseases are quite painful. http://www.cdc.gov... So when an animal gets an STD, it will suffer, and thus you shouldn't do anything that gives it an STD, which will make it suffer at your hands. Rebuttal 3: Humans Themselves Will Suffer From This Animal Diseases That Can be Transmitted Sexually to Humans: Brucellosis, Leptospirosis, Q Fever, Rabies, Flea Tapeworm, Echinococcosis, Campylobacter, Cryptosporidium, Cysticercosis, Giardia, Salmonella, and Toxocariasis. Source: http://en.wikipedia.org... Also, monkey are incredibly strong, including small spider monkeys. Regrettably, individuals have been murdered by "pet" chimpanzees that became out of control for whatever reason. Therefore, every monkey needs a trained handler because of their remarkable strength. If a human and a monkey engaged in sexual activity, the monkey would almost surely (though perhaps not intentionally) cause a severe injury in the human. Finally, my opponent says... "In addition, the costs of illegality are not worth the benefits. Between 2 and 8 percent of the US population are zoophiles.[7] It would cost $5.4 trillion to incarcerate every zoophile in the United States. [6] In addition, studies show that sexual frustration leads to rape. [8] For example, when prostitutes and pornography are more available in a society, the amount of rape declines drastically.[8] If zoophiles are not allowed to satisfy their sexual urges on animals, they may take out their sexual frustration on other humans. On balance, making bestiality illegal does more harm than good." So people cannot restrain themselves? I admit that this law would be extremely difficult to enforce, but it should still be illegal regardless, in the same way that heroin or cocaine should remain illegal. 5.4 Trillion dollars does not have to be spent, because: A. Every Zoophile would not be caught B. Any Zoophile who respected the law would simply restrain himself C. Incarceration and court costs could be lowered Also, In 2012, an estimated 23.9 million Americans aged 12 or older"or 9.2 percent of the population"had used an illicit drug or abused a psychotherapeutic medication (such as a pain reliever, stimulant, or tranquilizer) in the past month. http://www.drugabuse.gov... Clearly it would take a lot of money to incarcerate 9.2 percent of our population. So does this mean we should legalized cocaine, heroin, and meth? This is a faulty argument on your part. Finally, I say: If a man lies with an animal, he shall surely be put to death, and you shall kill the animal. 16 If a woman approaches any animal and lies with it, you shall kill the woman and the animal; they shall surely be put to death; their blood is upon them. Leviticus 20:15-16 Of course, if you're not a Christian then you can ignore this one. I apologize if I didn't respond to everything you said, but your argument was quite lengthy. Hopefully I answered your main points, though. I look forward to ColorfulMetal's rebuttal.