http://www.whole-dog-journal.com/iss...e_15649-1.html
Для тех, кто читает по-английски. Всё очень неоднозначно и там, где стерилизация приветствуется и проводится в 80 - 90 % случаев. Очень интересно одно высказывание:
Myrna Milani, DVM, is the author of seven books on canine and feline health and behavior. The veterinarian, based in Charlestown, New Hampshire, has researched and lectured about spaying and neutering, and doesn’t buy into the “PR campaign,” as she calls it, that responsible owners must sterilize their pets.
“When all of the responsible people neuter their dogs, who’s left breeding?” she asks, answering, “The irresponsible ones.”
Dr. Milani feels it’s unfair that owners are frowned upon if they opt to control breeding by carefully supervising their dogs instead of sterilizing them.
“It is really funny that we’ve equated responsibility with neutering, when in reality you could almost make a case for it being the opposite,” she says. The decision to not sterilize but carefully supervise a dog is “very mature, it takes a tremendous amount of commitment, and it requires a tremendous knowledge of and respect for that dog,” she says.