I would be pretty mad if my supper got stolen by a neighbor...
In my opinion it's always good practice to kill animals as humanely as you possibly can, simply because there is no reason to cause suffering other than the desire to be cruel. Only cruel people hurt animals unnecessarily. However, I have no problem with anyone killing and eating a dog (or cat, or any other animal) and I think some people need become more accepting of other cultures.
Well, I have done some local research and apparently the Government of Guam is in a state of total fucked-upness on this one which isn't surprising considering my experience here. They recently passed "tough" new laws on animal cruelty, making it a felony and encouraging citizens to report cases of abuse (apparently so they can ignore the reports). However, this did have the effect of getting them off the list of "Top Places to be an Animal Abuser" without actually doing anything or incurring any costs:
“Through the recent strengthening of its animal protection laws, Guam joined the list of U.S. jurisdictions with felony animal abuse penalties,” the release stated. “The new felony penalty applies to not only cases involving cruelty, but also neglect of an animal which results in his or her serious physical injury or death. In addition, Guam’s new law made animal abandonment a misdemeanor; authorized the law enforcement seizure of mistreated animals; and adopted robust standards of care for animals.”
http://mvguam.com/local/news/21976-guam-improves-in-animal-protection.html
However, if you want to eat your pet, while it is generally frowned upon, apparently there is no law preventing you from doing so. As far as laws against inhumane slaughter, there is total confusion/indifference within the local law enforcement and government which also is not surprising considering it takes the local police 20+ minutes to respond to an active shooter (ended up being a double murder-suicide) on an island 30 miles x 4-12 miles with of 1/3rd if that being within DoD bases and not covered.
http://mvguam.com/local/news/17550-killing-eating-of-stray-dogs-tackled.html
“We never got anybody to admit doing it and we sort of tried to research the law, which does not allow you to kill a dog unless it’s your dog. You can only kill a strange dog if that dog is in the act of attacking someone or destroying your property, the law does allow that,” he said.
“As I read it, unfortunately I don’t see anything there that prohibits you from consuming your own dog,” he added. “However, the laws do require humane slaughter, and that’s very hard to do with a dog.”
Animal ownership as far as dogs here is also a gray area. You have roaming packs of boonie dogs, friendly neighborhood pets that are fed but not "owned", actually owned and cared-for pets, and everything in between. In case "your" animal ever attacked and injured anyone, you could just say it was a stray and kill it with no legal accountability or keep what for all purposes is a pet, until you decide to eat it, in which case it becomes livestock with such a loose interpretation of what is considered a "humane slaughter," that it is not worth even enforcing in the eyes of local agencies.
In retrospect, had I known the obscurity of the law out here and that the animals were being eaten and were probably not even legal property of my neighbors (meaning that when they strayed onto my yard they were as much mine as theirs unless they were able to produce documentation to the contrary), I could have done things differently and those animals would have ended up at the animal shelter. If they were able to produce documentation that they owned the pets, I would also be able to report the abuse of the animals. That way, their right to eat what they assert is their property is maintained, while I can still exercise my right to catch and turn in what are for-all-purposes are strays to the animal shelter or report animal cruelty or inhumane slaughter if they maintain that they do in fact own it.