Every time I see an "ISO stud" ad on fb or craigslist I am so tempted to respond as if I actually have an intact male, and require info on current health testing, pedigree, and with a comprehensive list of what their bitch has done. I know that my messages would most likely be ignored, because I highly doubt any of these dogs have done anything. However the funniest part about these ads is that they alway mention that their dog is already in heat! Like, dude, if you're the kind of person to just put out an ad for any old stud, you're probably not knowledgeable to know exactly how long she's been in heat, and in order for the timing to work, they'd probably have to find a stud that was available immediately if they were lucky enough to catch it quickly.