"Zeutering" is a non-surgical process that sterilizes male dogs. A solution of Zinc gluconate (like you take for a cold), L-Arginine (a non-essential amino acid) and water is shot into a dog's scrotum. Within a month he is permanently sterile.
The Ark Sciences formulation was initially introduced in the U.S. with the name Neutersol. Now it is called Esterilsol. It is commercially available in Colombia, Mexico and Bolivia; it has received regulatory approval for puppies between 3- and 10-months old in the U.S. About 300 dogs have been zeutered here so far, but many more will be getting ball shots soon: Neutersol officially launches here later this year.
Better technology to make it easier to spay and neuter dogs and cats would make a huge difference to the world of animal rescue; in the U.S. alone, it's estimated that some four million cats and dogs are put down at shelters every year (tens of thousands in NYC alone). Easy, inexpensive, effective sterilization could seriously make that number shrink. We will finally rid the world of puppies! Bwah-ha-ha-ha! But seriously. This is a good thing. Such a good thing that there's even an X-Prize type award for it: The Michelson Prize, which will be $25 million for the first invention of a single-dose sterilant for male and female cats and dogs.
Right now, Zeutering is just for boy dogs. Its effects are still being researched. The Alliance for Contraception in Cats and Dogs (which, does not make dog condoms, as it's name might suggest) is partially funding a planned study in Chile, where a zeutered group, a castrated group, and a control group of dogs will be monitored by behaviorists and tracked using GPS collars.
The prospect of non-surgical neutering is, I'm guessing, going to be more exciting to people who deal with strays and rescues than it will be to most private practice vets, for whom surgical neutering is bread-and-butter work. Then again, I've definitely heard people (usually male people), stress over the idea of dog castration; zeutering would be a way to avoid your dog becoming a baby daddy while maintaining the integrity of his ball sacs (you can always tell when a guy has neuticles).
In this video, a dog owner gets the joy of watching her puppy, Max, gets zinc-neutered. He gets sedated, has his testicles measured, then gets a shot to each ball. There are lots of lingering dog penis closeups. Max's mom takes many pictures.
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